请放心的英文：
rest assured (that)

参考例句：

Be reassured please.
请放心。

“She’s not very ill any more. Console yourself”
“她已没有什么大病，你请放心吧。”

rest是什么意思：
v. 休息；（使）倚靠；被搁置；安息，长眠
n. 休息时间；休止，休止符；剩余部分；其他；支架

Rest on one's laurels
躺在荣誉上睡觉

A change of work is as good as a rest
调换一下工作是很好的休息

Anger rests in the Bosom of folly
怒火常寓于蠢人的胸中

Rest the ladder against the wall.
把梯子靠在墙上吧。

I need to rest for a piece.
我需要休息一下。

assured是什么意思：
adj. 自信的；确定的
n. 被保险人
v. assure的过去式和过去分词；使确信，确保

His success is assured.
他取得成功是无疑的。

To inform positively;assure.
使确信斩钉截铁地告知；使确信

They answered with assurance that it was against the rules.
他们很有把握地回答说那是违反规定的。

I assure you it was not deliberate.
请相信我，这不是故意的。

Please rest assured that repayment is ensured.
请您放心，还款是有保障的。