Fomite
污染物
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
The fox knew too much, that's how he lost his tail.
机关算尽太聪明，反误了卿卿性命。
It's a good idea to hold such conferences.
召开这样的会议真是个好主意。