take one's word for it 相信…的话；…说的是真话

【例句】
You'll buy nothing but trouble if you buy that house, take my word for it.
你要是买那栋房子只会买来麻烦，我说的都是真的。

I'll take your word for it. I don't go out there.
我相信你说的。我从没有去过那里。