useless

US /ˈjuːs.ləs/
UK /ˈjuːs.ləs/
"useless" picture
1.

無用的, 沒用的

serving no purpose; completely without use

:
This broken pen is completely useless.
這支壞掉的筆完全沒用
It's useless to argue with him; he never changes his mind.
和他爭論是沒用的;他從不改變主意。
2.

無能的, 不擅長的

having no ability or skill in a particular area

:
I'm completely useless at math.
我數學完全不行
He's useless with computers.
他對電腦一竅不通