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Convention ：custom, tradition, accepted practice
eg. In the light of traditional Chinese conventions, people will stay up to celebrate Eve.
根据中国人民的传统习惯，除夕之夜要守岁。
follow the local conventions 准守当地的风俗习惯
break down the old conventions突破旧传统
routine : the usual or normal way in which you do things
常规， 惯例
daily routine 日常生活
adj. 常规的， 例行的
a routine medical examination常规身体检查
routine meetings 例行会议
invariably adv. always
eg. parents seem invariably right.
variable n. （数）变量
adj. likely to change often 易变的，多变的
the variable nature of the English climate 英国气候的多变性
invariable 不变的
invariable temperature 恒温
eccentricity n. 怪癖
eg. The old man had a reputation for eccentricity.
eccentric (行为古怪超常的)怪人
eg. I was regarded as a sort of eccentric when I quit my seemingly promising job.
当我辞掉了我那份看上去大有前途的职业，就被人看成是有点像个怪人似的。
legendary adj. 传奇式的
eg. Michael Jordan, a legendary figure in US basketball, was considered to be the best player of the 1980s and 1990s.
