徒劳无功相关英语单词,徒劳无功英语翻译,徒劳无功在线翻译

prove futile;beat the air;be a wasted effort;burn daylight;be a fool for one's pains

徒劳无功双语翻译,徒劳无功在线翻译例句

The crew fought a losing battle to try to restart the engines.

全体船员努力尝试重新启动发动机,但结果徒劳无功。

Efforts to reach the people named in the report proved unavailing.

联系过报告中所提到的那些人,但都徒劳无功。