得不偿失的英文：
the gains do not make up for the losses

参考例句：

Give a lark to catch a kite.
得不偿失。

Game not worth the candle
得不偿失

The moral of this story is that crime does not pay.
这则故事的寓意是，犯罪是得不偿失的。

Strive to avoid battles of attrition in which we lose more than we gain or only break even.
力求避免打那种得不偿失的、或得失相当的消耗战。

He that lick honey from a nettle,pay too dear for it.
荨麻剌上舔蜂蜜，得不偿失。

We fought to show that aggression does not pay, and that the robber cannot be allowed to get away with his swag.
我们打这一仗，是要让世人看看，侵略得不偿失，绝不能让强盗带着赃物逃脱。

gains是什么意思：
v. 获得；获利；增加；走快；到达
n. 增加；利润；收获

No pains, no gains.
不劳则无获。

This ticket will gain you admission [will gain admission for you].
这张票将使你得以入场。

Its gain is the product of the gains of its constituent branches.
它的增益等于它含有的分支的增益的积。

make是什么意思：
v. 做；制造；生产；使得；获得；准备；引起；开始；使成为，产生；构成
n. 形状；样式；制造；构造；品牌

a man of this make
这种性格的人

make an example of
1.惩罚...以儆戒他人

make a dive for
向￥冲去

losses是什么意思：
n. 损耗，亏损；丢失；去世；失败；浪费；降低；减少

Depreciation, loss of market, loss of use and other consequential losses of any description.
贬值、丧失市场或使用价值等其他后果损失。

The school was lamed by losses of staff.
学校因教职人员流失而开不了课。

loss and damage or delay of goods.
贷物的损失、损坏或交付延误。