Vasodentin
[醫] 血管性牙質
??? 情景例句
What can I do for you, sir?
先生，有什么需要幫忙的嗎？
I must play my spare time well, or I end up doing nothing.
我必須善于利用空閑的時間，否則生命將會在無所事事中告終。
Get him his change! It's easy to say, sir; but look at the bill yourself.
給他找錢！先生，說的倒輕巧，您自己來看看這張票子吧。