Pentazane
吡咯烷
🗣️ 情景例句
The rural workforce has been flowing in to the cities ever since the open door policy was adopted.
自从改革开放政策实施以来，农付劳动力正不断流向城市。
I was born in China and brought up in the U.S.A.
我出生在中国，在美国长大。
One packing case was crushed.
有一个箱子全压坏了。