你就直接交给他，不必要我转手。

Give it directly to him; there is no need to do it through me.

《新英汉大辞典》

我不想使这项任务不必要地复杂化。

I do not wish to complicate the task more than is necessary.

《牛津词典》

在20世纪50年代中叶，我是一个有点无趣的学生，当时认为做任何不必要的事都是浪费精力。

In the mid-1950s, I was a somewhat bored student who believed that doing any more than necessary was wasting effort.

youdao

When you're all out of specific cases and you want to handle everything else, you literally say "default:" And here I could end the program with break, but it's kind of unnecessary because once I'm at the bottom of the curly braces, that's it.

当它不在你列出的所有情况中,为了处理其他的情况，你可以用“default：“,这里我可以用break来终止这段代码，但是它是有点,不必要的，因为我已经在这个花括号的,底部了，就这样了。

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