那些学生为了讨好老师，总是卑躬屈膝地迎合他的每个要求。

The students kept ___kowtowing to the teacher's every demand just to please him.

在传统仪式上，学生们向老师行叩头礼以示尊敬。

During the traditional ceremony, the students performed ___kowtowing to their teacher as a sign of deep respect.