一天，有位中国姑娘对我说，按照传统风俗习惯，孩子的婚姻必须由父母做主，因此她母亲的婚姻是由她祖父安排的，不过，她姐姐却打破了这个惯例。
marriage was arranged by her grandparents,but her sister has broken the tradition.
斗牛的规则很严格，并且是按传统惯例制定的。
During the experiment, Martin strictly stuck to the rules set by his tutor.
斗牛的规则很严格，并且是按传统惯例制定的。
During the experiment, Martin strictly stuck to the rules set by his tutor.
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