by tradition

基本解释

By tradition, throwing a shoe is the most insulting act in the Arab world.
按照阿拉伯世界的传统，向人扔鞋是极具侮辱性的行为。
A bad usage can spread by tradition and imitation even among people who should and do know better.
即使在那些应该也确实明白的人之间，坏的用法也能通过传统和模仿而散布。
By tradition, she had to use her husband's surname Kojima on their marriage certificate, which means she must also use it on any other legal documents.
按照传统，她在结婚证书上必须使用丈夫的姓氏——小岛，这意味着她同样也得在其它法律文件上使用这个姓氏。

By tradition, George and Laura Bush will leave Washington immediately after Barack Obama is sworn-in on Tuesday.
But it actually referred more politically to all of the male citizens, and in Greek cities, by tradition, only men were citizens of a city.
但是政治意义上特指全体男性公民，在希腊城市里，按传统，只有男子才算城市公民。
耶鲁公开课 - 新约课程节选
By tradition, they divide by 360, not 365, and so you understand that dealers of Treasury bills tend to quote "discounts."
习惯上他们除以360,而不是365,国库券的经销商,习惯于谈论"贴现"
耶鲁公开课 - 金融市场课程节选

Jesuits, by tradition, are schooled in both so Pope Francis will be up to the job.
FORBES: Pope Francis: Jesuit to the Rescue