门槛
HSK 7-9threshold; access barrier; 'ticket'
Explanation
sill; threshold; fig. knack or trick (esp. scheme to get sth cheaper)
Examples
掌握这个门槛,你就可以开始学习更高级的内容了。
Mastering this threshold, you can start learning more advanced content.
他终于跨过了这个门槛,成功地获得了那份工作。
Finally crossing this threshold, he successfully obtained the job.