vain

use someone's name in a way that shows a lack of respect

轻慢谈到，随便议论

To no avail; without success

徒劳：毫无收益的；未成功

Our labor was in vain.
我们的劳动是白费力气

In an irreverent or disrespectful manner

抱以轻漫不敬的态度

took the name of the Lord in vain.
妄称上帝之名