??? 情景例句
This is Mr. Wu in Room 415.
我在415房間，姓巫。
It's earier to run down the hill than go up.
下山容易上山難。
You see, the school will be expensive to run and we shall need a lot of good teachers.
你知道，辦這所學校要花很多的錢，我們需要很多好教師。