谁知道be able to是什么意思
be able to: [ bi:'eibltə ] 会,能v. 能够例句: 1. Will you be able to glance over my report before I send it to the committee? 在我把这份报告送到委员会之前, 你能粗略地看一下吗? 2. Unless you change your mind (=If you don't change you mind), I won't be able to help you....