Fluoroethane
[化] 氟代乙烷; 乙基氟
🗣️ 情景例句
I'm glad Mr. Marchetta was so helpful.
我真高兴 ，Marchetta先生如此帮忙。
I often finish school in the afternoon.
我常常在下午放学。
After that she helped her parents. She quickly cooked the supper, and cleaned the house.
之后她给父母帮忙。她很快煮好了晚餐，并把房子打扫干净。