“不必担忧。”他宽慰道。

'There's no need to worry,' he said soothingly.

《牛津词典》

另一天就是明天 我们不必担忧明天将会如何。

The other day we should not worry about is Tomorrow

youdao

电动汽车不用再买贵电池不必担忧续驶里程。

Electric cars no longer require drivers to buy expensive batteries or to worry about limited driving distance.

youdao

you know, don't worry. People here are extremely nice and extremely helpful

不必担忧，布朗大学的师生都十分友善，乐于助人，

想进布朗的话 - SpeakingMax英语口语达人