They have labored to complete the job.

他努力完成这一。

Postal workers labored overtime to speed delivery of the Christmas mail.

邮电人加班加点以加速圣诞期间信件的发送。

They labored along the bad road.

他条难走的路上艰难地行进。

The boy labored quietly.

这个男孩静静地干着。

I labored to understand him.

我努力了解他的意思。

He labored under the mistake.

他因弄错而吃苦头。