不用担心

Don't worry! I shall awake him on time.

不用心!到时我会叫醒他。

Never mind the expense!

不用心费用！

This feature also permits field repair of the valve seat without fear of misassembly by field mechanics.

这种特征也允许现场维修阀门阀座，不用心由于现场维修设备不足导致错误装配。

And should you drop it into a tubful of cloudy, child-colored water, not to worry — it floats.

而且，如果不慎将香皂落入盆，里面盛满了孩子们洗浑水，你也不用心找不到——它会上水面。

Dorothy could ramble all day on the hills and sit up talking to Coleridge all night without being scolded by her aunt for unwomanly behaviour.

白天，多罗茜可以整天在山上漫步；晚上，她可以整夜与柯律支聊天，而不用心姨妈会为此责备她不像个淑女。

3 The product is fixed with elastic rubber,suitable for any size of adumbral boards.With an adumbral on your car,you don't have to worry about the installation.

使用橡胶带固定，无论大小遮阳板都适用，不用心安装问题，只要您爱车有遮阳板即可。

Wash daily with a mild soap and water. Use your hands rather than a facecloth so that you don't risk damaging the skin by rubbing too hard.

每天用柔性香皂洗脸，宁愿用手洗脸，也不要用毛巾洗脸。那样皮肤就不用心由于摩擦大而受到伤害了。