needless
adj. 不必要的，不需要的
例句
Banning smoking would save needless deaths.
禁止吸烟会免除不必要的死亡。
《牛津词典》
The problem, needless to say, is the cost involved.
不用说，问题是所涉及的费用。
They greet their children's teenage with needless dread.
他们怀着不必要的恐惧迎接孩子们的青春期。
