produce and discharge (something, especially gas or radiation)
排放,散发(尤指气体、辐射物)
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coal-fired power stations continue to emit large quantities of sulphur dioxide .燃煤火力发电站继续排放着大量的二氧化硫。
make (a sound)
发出(声音)
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she emitted a sound like laughter .她发出了一种类似于笑声的声音。
"early 17th cent.: from Latin