The ballerinas were toeing the line.是什么意思？

The ballerinas were toeing the line.

芭蕾舞女演员踮起脚尖,排成一行.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

ballerinas

n. （意大利语）芭蕾舞女演员（尤指演主角的）( ballerina的名词复数 )；

例句
The onstage ballerinas are seemingly of the uniform height.
台上演出的芭蕾舞演员似乎都一样高.

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

toeing

轮子斜向；

例句
The ballerinas were toeing the line.
芭蕾舞女演员踮起脚尖,排成一行.

line

n. 线条，排，行列，界线；vt. 排队，用线标出，沿…排列成行，给…安衬

例句
Every time I fluffed a line Lenny got me out of trouble with a brilliant ad-lib.
每次我台词出错时，伦尼都通过机智的临场发挥帮我解围。