Fluoroethane
[化] 氟代乙烷; 乙基氟
🗣️ 情景例句
Do we have to bag our own groceries?
我必须自己装我们买的商品吗？
It is my job to introduce the foreign guests who will be spending the week with us here.
我的责任是介绍这些将与我们共度这一周的外国客人们。
'I don't think the windows need cleaning at this time of the night.
“我看不必在夜里这个时候擦窗子吧。