They have labored to complete the job.

他们努力完成这一工作。

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

邮电工人加班加点以加速圣诞期间信件发送。

They labored along the bad road.

他们在那条难路上艰难地行进。

The boy labored quietly.

这个男孩静静地干着。

I labored to understand him.

我努力了解他意思。

He labored under the mistake.

他因弄错而吃苦头。