在公司，所有员工都必须遵守规定。

In the company, all staff are expected to ___toe ___the ___line.

他一直都服从命令，但最近开始质疑规则。

He had always ___toed ___the ___line, but recently he started questioning the rules.

要在军队中成功，你必须学会毫不犹豫地服从命令。

To succeed in the military, you must learn to ___toe ___the ___line without hesitation.