observance

学校要求学生严格遵守校规。

The school requires strict ___observance of its rules by students.

这个节日包含一个特别的仪式来庆祝丰收传统。

This festival includes a special ___observance to celebrate the harvest tradition.

他对风向的仔细观察帮助他成为了优秀的帆船选手。

His careful ___observance of wind direction helped him become an excellent sailor.