Dibromopropane
二溴丙烷
🗣️ 情景例句
and I promised to have lunch with both of them today.
我答应今天和他们共进午餐。
In Britain, there are open universities.
在英国，有成人大学。
So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
于是，考古学家们既缺乏历史记载，又无口头传说来帮助他们弄清最早的“现代人”是从哪里来的。