惯例

1. 在预订时交付定金是一般的[普遍遵守的]惯例。
   It is accepted/standard practice to pay a deposit with one's order.
2. 惯例上要求这样的集会应当以祈祷开始。
   Convention requires that such meetings open with prayer.
3. 偏离的，背离惯例的
   Departing from convention.
4. 惯例符合习俗的社会行为举止之准则
   The rules of conventional social behavior.
5. 按照惯例这一领导人的副职总是由女子担任。
   By convention the deputy leader is always a woman.

例的英语翻译：