a waste of的用法和样例：
- He decried her efforts (as a waste of time).
- I've finished with gambling it's a waste of money.
- That's simply a waste of time.
- It is a waste of time to listen to his insignificant talk.
- It's a waste of money betting on that old nag!
- It's only a waste of time to speak to her.
- It's a waste of time.
a waste of的相关资料：