放心英文名称

rest assured 放心don't worry 别担心set one's heart at rest 安心rely upon it 放心take it easy 放轻松,别紧张想到的就这些，都是比较口语化的，根据不同场合来用吧~基本都可以互用的~

feel relieved

rest assured 放心；确信无疑be at ease 放心feel relieved 放心rest one's heart 叫某人放心！

assured 只是直译，通常木有这么说的。

relaxno worriescalm down loosen uptranquilize

You may rest assured. Make yourself easy (=Make your mind easy you may rest assured that... 请放心我们一定遵守诺言。 Please feel assured that we will abide by our promise. 请放心，我们会准时完成的 Rest assured that we will finish on time.

don't worry. 口语一般都这么说，没人用别的