Spelaeology
洞穴學(xué)
? 同義詞
??? 情景例句
If you wish to enter you'll first need gh show return dicket.
如果你想進(jìn)入的話，首先出示你的雙程票。
It's a deal!
成交！
What do I have to do if I want to be thinner?
如果我想瘦一點的話，我得怎么做呢？”