专题文章
时长:00:00更新时间:2023-01-01 02:10:19
1、in vain的意思是:徒然;无效。2、in vain的英英释义是Adverb:to no avail;"he looked for her in vain""the city fathers tried vainly to find a solution"。3、in vain的例句是They made vain attempts to reach the mountaintop.他们几次徒然尝试想攀登山顶。
查看详情