顶用[dǐng yòng]
词典顶用
词典be of use：有用处，起作用；顶用。
词典顶用
词典be of help：济；顶用。
词典serve the purpose：顶用；抵事；管用， 凑合用；顶事。
顶用[dǐng yòng]
be of use; be of help; serve the purpose:
例：你干着急顶什么用?
What's the use of just worrying and doing nothing about it?
绳子太短， 不顶用。
The string is too short to serve.
我去也不顶用。
I can't be of any help even if I go.