他迅速爬上了公司的晋升阶梯，成为了副总裁。

He quickly climbed the corporate ___ladder to become a vice president.

这份实习是许多年轻毕业生职业阶梯上的第一级。

This internship is the first rung on the career ___ladder for many young graduates.

要在职业阶梯上进步，持续学习是必不可少的。

To advance on the professional ___ladder, continuous learning is essential.