We'd say she's " hit her stride" .

我们可以说她“走上正轨”了。

Yes! What I really love about Julia Child is that she did not hit her stride as a cooking expert until later in life.

当然！我真正喜欢茱莉亚·查尔德的是她直到晚年才成为了烹饪专家，充满干劲。

If a female marathoner can ignore the shouts of the crowd and get past the tough middle of the race, she will often hit her stride.

如果一个马拉松女选手可以忽略人群的叫喊声，通过最艰难的比赛中段，那么她通常还会继续奔跑。