来自labor,劳动，辛劳，引申词义做作的，不自然的。词义演变比较factitious.

1. I was close enough to the elk to hear its labored breathing.

我离那头麋鹿非常近，能听见它吃力的呼吸声。

2. They have labored to complete the job.

他们努力完成这一工作。

3. They labored under the disadvantage of not having enough money.

他们苦于得不到足够的资金.

4. Among the planners, a labored joke was spreading about Captain Henry's girl - friend, " Elsie ".

在计划人员中间, 已精心制造出一个关于享利上校的女友 “ 艾尔西 ” 的笑话在传播.

5. He labored under the delusion that he could never make a mistake.

他受害于他从来不会出错的幻想.