unnecessary

形容词 unnecessary:

1. not necessary
   同义词：unneeded

1. I'm sorry you've had a wasted (ie unnecessary, fruitless) journey.
   很遗憾你白跑了一趟。
2. I need hardly say (ie It is almost unnecessary for me to say) that I was very upset.
   无庸赘言，我心乱如麻。
3. Don't involve yourself in unnecessary expense.
   勿做不必要的花费。
4. It's very foolish of the commander to expose his men to unnecessary risks.
   这个指挥官让士兵们冒不必要的危险真是太愚蠢了。
5. You shouldn't expose the soldiers to unnecessary risks.
   你不应该让士兵们冒不必要的危险。
6. Don't burden yourself with unnecessary problems.
   勿为不必要的问题所累。
7. All this is totally unnecessary.
   所有这些完全都是多余的。