Epimatrix
外基质
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
Other men live to eat, while I eat to live.
别人为食而生活，我为生活而食。
So how can I help you ? asked the detective.
那么我怎样才能帮你呢？侦探问。