喵星的哚朵
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~
清晨小雨818
不算高人....To “assure” a person of something is to make him or her confident of it. According to Associated Press style, to “ensure” that something happens is to make certain that it does, and to “insure” is to issue an insurance policy. Other authorities, however, consider “ensure” and “insure” interchangeable. To please conservatives, make the distinction. However, it is worth noting that in older usage these spellings were not clearly distinguished.所以，insure一般用于给保险打包票，ensure可以和它互换(有些权威人士说）.assure用于告诉某人某事行得通.ensure就是要确保这事发生。Secure一般是指安全感，而且形容词意思是"保险的".
chaorenxiaoling
放心的英文rest assured，读音：[rest əˈʃʊəd]。
rest assured英 [rest əˈʃʊəd] 美 [rɛst əˈʃʊrd] 确信无疑，放心。
rest assured的用法示例如下：
1.You can rest assured that everything will be all right.
你放心，一切都会安排好的。
2.You can rest assured that you'll be treated well.
你放心，不会错待你的。
3.Rest assured that he won't make things difficult for you.
请放心，他不会跟你过不去的。
4.You can rest assured that I'm a man of my word.
放心，我说到做到。
扩展资料：
rest assured的近义词：
1.set one's mind at rest 放心；定心丸；安心。
2.be at ease英 [bi: æt i:z] 美 [bi æt iz]
放心;安逸，自由自在;宽心。
3.rest one's heart英 [rest wʌnz hɑ:t] 美 [rɛst wʌnz hɑrt] 放心。
4.disburden英 [dɪs'bɜ:dn] 美 [dɪs'bɜ:dən]
v.卸货;解除负担。
