Dienanalysis
二烯分析
🗣️ 情景例句
I'm having some trouble keeping food down.
我吃东西时感到困难。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
It's over there,behind the teapot.
就在那儿，茶壶后面。