Benzanthacene
[机] 苯并
🗣️ 情景例句
who spent the last five years
用过去五年的时间
I will take an escalator.
我将去搭手扶电梯。
Indeed, we lack practice and experience nowadays in dealing with primitive conditions.
确实，我们今天缺乏对付原始环境的实践和经验。