He had an accident unnecessarily.

他出了一起本可以避免的事故。

People with depression are unnecessarily suffering harm.

抑郁症患者正在遭受不必要的伤害。

They waste food unnecessarily, which need to be reminded.

他们不必要地浪费食物，这一点需要被提醒。

These rules are unnecessarily complicated. Can't we make them simpler?

这些规定复杂得毫无必要，我们不能简单点吗？

I didn't want to upset my husband or my daughter unnecessarily.

我不想不必要地让我的丈夫或女儿不开心。

A patient's silence should not be interrupted too early or allowed to go on unnecessarily.

病人的沉默不应被过早打断，也不应该不必要地持续下去。

There's no point worrying him unnecessarily.

没有必要让他过于担心。

It would be foolish to raise hopes unnecessarily.

无缘无故地寄托希望是愚蠢的。

They have pulled out patients' teeth unnecessarily.

他们毫无必要地拔掉了病人的牙。