Chlorohydrocarbon
氯代烴, 含氯烴
??? 情景例句
He studied harder to improve his English.
他更加努力提高英語水平。
The price we offered is more favorable than the quotations you can get from our competitors, I'm afraid.
恐怕我方報價比您從我方競爭對手那兒得到的報價更優惠。
During a bullfight, a drunk suddenly wandered into the middle of the ring.
在一次斗牛時，一個醉漢突然溜達到斗牛場中間，