Membranogen
膜素
🗣️ 情景例句
I can't build a fire by rubbing two pieces of wood together.
我总不能靠着磨擦两片木柴来取火吧。
When you're down and blue, go to a comedy.
你灰心丧气的时候，去看看喜剧。
These bags are heavy.
这是些重的盒子。