off the top of your head

含义

from memory, without checking or thinking for long

凭记忆，不查证也不细想.

例句

1. 1I'd say, off the top of my head, that the trip costs about two hundred pounds.
2. 2Can you name five capital cities off the top of your head?
3. 3I don't know his number off the top of my head, but I can look it up.
4. 4The waiter listed all twelve desserts off the top of his head, which impressed the whole table.
5. 5Asked for the population of Wales, Tom guessed three million off the top of his head.

语法

用法相当于副词，常与 say、know 或 name 连用。your 随说话人变化：my、his、their。

意思相近