obligatory

US /əˈblɪɡ.ə.tɔːr.i/
UK /əˈblɪɡ.ə.tɔːr.i/
"obligatory" picture
1.

強制性的, 義務的, 必須的

required by a legal, moral, or other rule; compulsory.

:
It is obligatory for all students to wear uniforms.
所有學生都必須穿校服。
Attendance at the meeting is obligatory for all staff.
所有員工都必須出席會議。
2.

敷衍的, 例行公事的, 形式上的

(of a person or their behavior) done to conform to social or legal requirements rather than from genuine desire or interest.

:
He gave an obligatory smile, clearly not amused.
他露出一個敷衍的笑容,顯然不覺得好笑。
The polite applause was merely obligatory.
禮貌性的掌聲只是敷衍了事