be sure
US /biː ʃʊr/
UK /biː ʃɔː/
成语
确保, 确信
to be certain or confident about something
示例:
•
I want to be sure that all the details are correct before we proceed.
我想确保所有细节都正确无误，然后我们再继续。
•
Please be sure to lock the door when you leave.
请务必在离开时锁好门。