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保安正在監控多個閉路電視監視器，并對發生的事件進行報告
An environmentalist is collecting samples of wastewater and testing them for contaminants
Two geologists sit and analyze the condition of the rocks in their hands to plan an excavation
建筑師和工程師們正在討論建筑項目的進展并檢查建筑結構的準確性的俯視圖
A geologist reviews details of a plan on a clipboard to plan their exploration
Two engineers are standing and working with smiling faces in front of an industrial plant at night
生物學家在湖邊處理廢水，手持塑料杯查看廢水，檢查水樣和污染物質量，旁邊有筆記本電腦用于分析
CCTV 工作人員正坐著檢查多個屏幕上 CCTV 攝像機的圖像
央視官員通過對講機與保安溝通，讓其去檢查監控區域
Two geologists are collecting soil samples in a mountain for mineral analysis
兩位建筑師在建筑工地討論建筑方案并查看施工進展
一位男性維修工程師正在檢查水管中的壓力閥系統并記錄數值
兩名閉路電視監控人員正在控制室通過多個監視器監控該地區的交通情況
環境工程師坐在井邊，左手拿著塑料杯，記錄分析檢查水源質量和污染物的結果。
一位水資源工程師在科學玻璃瓶中檢查水的純度并記錄在紙上
Silhouette of an engineer working under a wind turbine tower.
兩位工程師正計劃在建筑物屋頂安裝太陽能電池
病人沮喪地躺在醫院病床上，手臂上還插著靜脈輸液管
水庫中一名維修技術員正在檢查水泵系統和抽水機械的俯視圖
Environmental engineers examine natural bodies of water for organisms in their ecosystems
Environmental engineers examine natural bodies of water for organisms in their ecosystems
Environmental engineers examine natural bodies of water for organisms in their ecosystems
Environmental engineers examine natural bodies of water for organisms in their ecosystems
Environmental engineers examine natural bodies of water for organisms in their ecosystems
Environmental engineers examine natural bodies of water for organisms in their ecosystems
An environmental engineer examines the abundance of natural water sources and ecosystems
An environmental engineer examines the abundance of natural water sources and ecosystems
An environmental engineer examines the abundance of natural water sources and ecosystems
An environmental engineer examines the abundance of natural water sources and ecosystems
An environmental engineer examines the abundance of natural water sources and ecosystems
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
An environmental engineer examines water samples from a natural to identify organisms in ecosystem
Water resource experts check contamination levels in public water sources
Water resource experts check contamination levels in public water sources
Water resource experts check contamination levels in public water sources
Water resource experts check contamination levels in public water sources
Water resource experts check contamination levels in public water sources
Two engineers are standing working in front of an industrial plant at night
Two engineers are standing working in front of an industrial plant at night
Two engineers are standing working in front of an industrial plant at night
Two engineers are standing working in front of an industrial plant at night
Two engineers are exploring the minerals beneath the mountain's soil
Two engineers are exploring the minerals beneath the mountain's soil
Two engineers are exploring the minerals beneath the mountain's soil
Two engineers are exploring the minerals beneath the mountain's soil
Environmentalists collect water samples from a dam in test tubes
兩位環境工程師站在一口井旁，手持裝有水樣的實驗管，檢查水源的水質和污染物。
水資源工程師通過采集水樣進行檢測來檢查來自天然水源流經管道的水的純度。
A water resource worker is collecting water samples in a large reservoir
一位電氣工程師正在一家自來水廠檢查一個大型電氣柜上的電燈開關。
Solar panel installer is inspecting the electrical circuits and wiring connected to the solar panels.
Engineers are checking the operation of water pumps in a large waterworks.
Water resources officers are checking for contaminants in a swamp
Water resources officers are checking for contaminants in a swamp
Water resources officers are checking for contaminants in a swamp
Water resources officers are checking for contaminants in a swamp
Water resources officers are checking for contaminants in a swamp
An environmentalist is collecting samples of wastewater and testing them for contaminants
An environmentalist is collecting samples of wastewater and testing them for contaminants
An environmentalist is collecting samples of wastewater and testing them for contaminants
An environmentalist is collecting samples of wastewater and testing them for contaminants
An environmentalist is examining contaminants in a public river
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
An environmentalist is examining wastewater from an industrial plant's sewage pipes
Two geologists attempt to collect mineral samples from the soil
Two geologists attempt to collect mineral samples from the soil
Two geologists attempt to collect mineral samples from the soil
Two geologists attempt to collect mineral samples from the soil
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