Spelaeology
洞穴学
✅ 同义词
🗣️ 情景例句
I'm thinking about it....
我正在考虑中……
If the customer requests a carrier other than truck, he must bear the additional charge.
如果顾客坚持用卡车以外的运输工具，就必须负担额外费用。
Once you have done this, you will quickly become a useful member of the teazm.
一旦你这样做了，你很快就会成为工作班子里有用的员。