Polychlorohydrocarbon
多氯代烃
🗣️ 情景例句
And this gentleman is my grandfather, Malcolm Stewart.
这位绅士是我祖父Malcolm Stewart。
I wish I were running across an open field.
我真希望在原野奔跑。
'The fire broke out in the basement.I went down immediately,of course,
“地下室突然着火，我当然马上下去了。