1.
It was a vain effort.
这种努力是徒劳无益的。
2.
the vanity of human achievements
人类成就之徒劳无益.
3.
It could be expensive.
这样做只会徒劳无益。
4.
You're knocking your head against a brick wall.
你在做徒劳无益的事。
5.
It's no use praying for the weather to change.
祈求天气变化是徒劳无益的。
6.
All his efforts were without avail.
他的所有努力都是徒劳无益的。
7.
I advised my husband to give up smoking, but in vain.
我劝我丈夫戒烟，但徒劳无益。
8.
All my work was in vain.
我所做的所有工作都徒劳无益。
9.
The barrenness of their effort be due to poor management
他们努力的徒劳无益归咎於管理不善
10.
The barrenness of their effort is due to poor management.
他们努力的徒劳无益归咎於管理不善。
11.
It is all to no purpose , I tell you that you are ploughing the sand.
这是徒劳无益的，告诉你，你在枉费心机。
12.
It's useless arguing/to argue with them.
跟他们争论是徒劳无益的.
13.
Tom is so infirm of purpose that it is useless to ask him for advice.
汤姆这人优柔寡断，向他征求意见是徒劳无益的。
14.
Roosevelt was reluctant to undertake the thankless task.
罗斯福不大愿意承担这种徒劳无益的任务。
15.
You are beating a dead horse if you are trying to make him change his political views.
你要想改变他的政治观点，那是徒劳无益的。
16.
The debate whether a virus is living or nonliving leads nowhere.
争论病毒是生物体还是非生物体是徒劳无益的。
17.
The years of ineffectual service count big in the bestowal of rewards.
几年徒劳无益的服务，在论功行赏时就大有关系。
18.
My dear boys, it was no good bothering.
我亲爱的伙计们，一味的烦恼是徒劳无益的。