| 释义 |
in vainidiom (written) not achieving what is needed or wanted; without success徒劳无功；白费力气◆all their efforts were in vain.他们的所有努力都付诸东流了。◆they tried in vain to persuade her to go.他们极力劝说她去，但枉费了一番口舌。◆she waited in vain for her son to return.她等着儿子归来，但空等了一场。in vainsee ⇨ fail 1 |