苦于的英文：
labor under

参考例句：

The refugees are suffering for want of food and medical supplies.
难民苦于缺少食物和医药用品。

To suffer from dashing about on duties
苦于奔命

He is sorely afflicted with the gout.
他苦于痛风病。

We are suffering from a severe shortage of fuel.
我们苦于严重缺乏燃料。

The child is blessed with a bad leg.
这个孩子苦于腿病

She labored under extremely difficult circumstances
她苦于环境极其艰难。

They labored under the disadvantage of not having enough money.
他们苦于得不到足够的资金。

The school labors under the disadvantage of not having enough textbooks
这所学校苦于课本不足的不利条件。

The refugee is suffering for want of food and medical supplies.
难民苦于缺少食物和医药用品。

Mary labored under the affliction of having a drunken husband.
玛丽苦于有个酗酒的丈夫。

labor是什么意思：
n. 劳动；工作；劳工；英国工党
v. 劳动；费力地前进

It is a scientific labor.
这是一项艰巨的科学工作。

He is satisfied with your labors.
他对你干的活儿很满意。

Genius is nothing But labor and diligence.
天才不过是勤奋而已。

Their labor efficiency is very high.
他们的工作效率很高。

The laborer is worthy of his hire.
做工的人应得其报酬。

under是什么意思：
prep. 在…下面；少于adv. 在下面
adj. 下面的，较低的

Under the hammer
被拍卖

under the ground;swam under water.
在地下；游到水下

Under water, famine; under snow, bread.
洪水造饥馑，瑞雪兆丰年

The coin rolled under the bed.
硬币滚到床底下去了。

You are under the scrutiny of the police
你现在受到警察的监视。