unnecessary

不必要的；多余的，无用的英释中释adjnot needed, or more than is needed

1 unnecessary expenses,不必要的开支

1 There’s no point in taking unnecessary risks..冒不必要的风险没什么意义。

2 We can’t afford any unnecessary delays..我们经不起无谓的耽搁。

3 Williams was found guilty of causing unnecessary suffering to animals..威廉斯因无故虐待动物被判有罪。