fruitlessly是什么意思

实用例句

1. Four years of negotiation ended fruitlessly last December.

历时4年的谈判在去年12月无果而终。来自柯林斯例句

2. The donkey became extremely angry and tried hard to kick the tiger but fruitlessly.

毛驴很愤怒，尝试着用蹄子踢老虎，但没成功。来自辞典例句