Infructuous
a. 不结果的, 徒劳的
🗣️ 情景例句
Hello. This is an emergency. Can you please send an ambulance?
喂，这儿有急病患者，请派一部救护车来。
It will take me several hours if I really look at everything.
如果全部参观的话，那得需要好几个小时。
What's wrong with you?
你怎么回事？