您要查找的是不是：
- It is vain to attempt to root out heresy by force. 试图用暴力消除异端邪说是徒劳的。
- Nobody should boast of his learning. 谁也不应当夸耀自己的学识。
- I sought to persuade him, but in vain. 我试图说服他，但无效。
- I tried to make his peace with her, but in vain. 我试图使他与她和好，但还是白搭。
- She is vain and foolish, and yet people like her. 她自负而愚蠢，然而人们喜欢她。
- I tried to console her, but in vain. 我试着去安慰她，但是无效。
- He would always help a lame dog over the stile, that was his boast. 他常常对有困难的人帮一把，这是他引以自傲的事。
- She's vain and foolish, and yet people like her. 她自负又缺少智慧，然而人们喜欢她。
- He wasted his life in the vain pursuit of pleasure. 他为了追求享乐而白白虚度了一生。
- They made vain attempts to reach the mountaintop. 他们几次徒然尝试想攀登山顶。
- All our entreaties were in vain. 我们的乞求全是枉然。
- He would always help a lame dog over a stile, that was his boast. 他总是对有困难的人帮一把，这是他引以为豪的事。
- They endeavoured to make her happy but in vain. 他们尽量使她快乐，却徒劳无功。
- We tried in vain to make him change his mind. 我们想使他改变主意，结果是白费心机。
- Hullo! Who's that, taking my name in vain? 喂！是谁在那儿议论我？
- All his father's exhortations were in vain. 他父亲的一切劝告都无效。
- vain boast 空洞的大话
- A flock of gulls circled overhead as the boast sailed into the port. 船只驶入港口时，一群海鸥在船上方盘旋。
- He tried in vain to catch the butterfly on the flower. 他白费力气想抓住停在花上的蝴蝶。
- Day after day she waited in vain for him to telephone her. 日复一日，她徒劳地等待他的电话。
