1.
Futile or idle labor or thought.
徒劳，空想无用的或徒然的劳动或想法
2.
It is lost labour to sow where there is no soil.
没有土壤，播种也是徒劳。
3.
He that go to the contrary way , must go over It twice .
走错方向，徒劳往返。
4.
It' s useless for us to continue.
我们继续下去是徒劳的.
5.
It was a vain effort.
这种努力是徒劳无益的。
6.
the vanity of human achievements
人类成就之徒劳无益.
7.
It could be expensive.
这样做只会徒劳无益。
8.
You're knocking your head against a brick wall.
你在做徒劳无益的事。
9.
Speeches and protests were of no avail.
演讲和抗议全都徒劳。
10.
It is aimless to cast water into the sea.
投杯水于大海，徒劳无功。
11.
I digged for gold in vain.
我掘地寻金但徒劳无功。
12.
The wind cannot be caught in net.
撒网捕风,徒劳无功。
13.
"Denial to me is vain," replied Mr. Brownlow.
“在我面前抵赖是徒劳的，”布朗劳先生说。
14.
It is futile to develop perverted knowledge that increases envy and the other five poisons.
若长养知识，却徒增嫉妒与五毒，也是徒劳。
15.
instead of looking vainly for some fixed time.
而不是徒劳地总要找某段固定的时间，
16.
They struggled for freedom, but their efforts were fruitless.
他们争取自由，但努力都是徒劳。
17.
In vain they rush frantically round from place to place,
他们到处狂奔乱跑，那样是徒劳的，
18.
There is no use in looking for that lost gold watch.
寻找那只丢失了的金表只是徒劳。