徒劳无功的例句（徒劳无功在句子中的用法）

• All attempts to revive the fishing industry were foredoomed to failure. 千方百计振兴渔业注定徒劳无功.
• Glyn: I've just been to the library but had no luck at all. 格林: 我刚刚去过图书馆,但是徒劳无功.
• 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。
• His efforts to woo her to his side proved fruitless. 他试图说服她站到自己一边的努力徒劳无功.
• We tried to keep him alive but to no avail. 我们全力抢救他,但却徒劳无功.
• His efforts were to no avail. 他徒劳无功。
• I wanted to sort out this problem with him, but it was like banging my head against a brick wall. 我曾想跟他把这个问题给解决了，但结果徒劳无功。
• 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。
• His efforts were to no avail... 他徒劳无功。