Perfluorocyclopropane
全氟环丙烷
🗣️ 情景例句
We'll set up our tents over there by the edge of the woods.
我们在林边搭帐蓬。
I'm leaving tomorrow,but I haven't packed my suitcases yet.
我明天将离开，但是我还没收拾好行李。
They have to work hard to support their family.
他们必须努力工作来支持他们的家。