informal rule

• 潜规则；非正式规则

informal rule的用法和样例：

例句

1. Face concern is an implicit rule in China.
   摘要面子是中国人情社会的潜规则。
2. Many times, we cannot accept some viewpoints which come from the society in theory, but we use the practice to verify the reality of the absurd society hidden rule.
   很多时候，我们在理论上是不能接受一些来自于社会的观点，但是我们却在用实际行动来证明这种荒谬的社会潜规则的重要性。