释义
n. 惯例,规则,统治 v. 裁定,统治,支配 vi. 裁决,统治 vt. 统治
例句
1. It's against the rule to pick up the ball. 捡球是犯规的。 2. The rule is that someone must be on duty at all times. 按照规定,任何时候均需有人值班。