useless
adj
1 not serving a useful purpose; not producing good results 无用的; 无效的; 无益的
A car is useless without petrol. 汽车没有汽油就不能使用.
It's useless arguing/to argue with them. 跟他们争论是徒劳无益的.
All our efforts were useless. 我们的一切努力都白费了.
2 (infml 口) weak or incompetent 差劲的; 不怎麽样的
He's a useless player. 他技艺很差.
I'm useless at maths. 我数学可不行.
That would be a waste of money. What's your opinion?
那就浪费钱了。你的意见呢?
You were very kind. You brought out all your jewellery and you told me I could take anything I wanted. There were so many beautiful things that it was hard to choose. And then I saw a lovely diamond necklace with a big blue stone in the centre.