You'll buy nothing but trouble if you buy that house, take my word for it.

你如果买了那幢房子，买到的只有麻烦，相信我的话。

《柯林斯英汉双解大词典》

I am not a bad man, take my word for it, but I have done wrong.

我不是坏人，相信我的话，我只是做了错事。

youdao

Take my word for it, I'll give you a lesson that you'll remember for a long while.

相信我的话，我会给你一个教训，你会记得很久。

youdao

And again,don't take my word for it of course.

别盲目相信我的话。

哈佛公开课 - 幸福课课程节选

But take my word for it: the basic idea is entirely peachy and dandy.

FORBES: Have John Doerr and Kleiner Perkins Invested Too Much In Cleantech?

That would be Nick's kitchen nightmare, and you don't need to take my word for it.

BBC: Nick Clegg: It's sausage time

Take my word for it corrupted advice, like polluted drinking water, can be harmful to your (financial) health.

FORBES: Siedle's Rules for Handling Financial Adviser Conflicts of Interest