toe the line

详细解释:准备起跑, 听从

英语解释：

动词 toe the line:

do what is expected

例句：

I've told my children they must toe the line with regard to house rules or lose some of the freedom they presently enjoy.我告诉孩子们必须遵守家规，要不他们就会失去目前享有的某些自由。