U4E4 | convention
Convention【n.】
1. a large meeting of a political party or other organization（政党或其他组织的）大会，集会
The Democratic National Convention will be held next month.
民主党全国代表大会将于下月举行。
She attended a teachers' convention in Chicago.
她参加了在芝加哥举行的一个教师大会。
2. a formal agreement between countries or groups of people（国家或团体间的）公约，协定
The Geneva Convention establishes standards for the treatment of prisoners of war.
《日内瓦公约》确立了对待战俘的标准。
3. a traditional or common way of behaving or doing something习俗，惯例
It's a convention to shake hands when you meet someone for the first time.
初次见面时握手是一种习俗。
*break with convention
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