1. The mailbox is over there.
   邮筒就在那儿
2. I put the letter in the mailbox.
   我把信投入邮箱。
3. I dropped the letter in the mailbox on the corner.
   我把信投入了拐角处的邮筒里。
4. I drop the letter in the mailbox on the corner.
   我把信投在拐角处的邮箱里。
5. Please drop these letters in the nearest mailbox.
   请把这些信投入最近的邮箱。

　2个名词解释