Dialkylene
二烯基
🗣️ 情景例句
I hope I can see you again.
我希望再到你。
He seldom came to see his wife, did he?
她不来看他妻子，是这样吗？
The lawyer ascertained that a policeman had indeed dealt roughly with foreigners on several occasions.
律师证实有个警察确实多次粗鲁地对待外国人。