词性：adj.
音标：/əˈblɪɡ.ə.tɔːr.i/
释义： Obligatory describes something you do because you have to, not because you want to. 必须的，义务的，强制的，强迫的（有时候有可能是不情愿的）；
近义词： [bounden]
morally obligatory
[compulsory], [mandatory], [required]
required by rule
[de rigueur]
required by etiquette or usage or fashion
[imposed]
set forth authoritatively as obligatory
[incumbent on]
morally binding or necessary
[indispensable]
unavoidable
[prerequisite]
required as a prior condition or course of study
[necessary]
absolutely essential
第二个意思是 礼节性的，习惯性的，随大溜的，赶时髦的。
He didn’t touch me much, except for that one obligatory kiss.
I laugh, but it’s more of an obligatory laugh than a real one.