A set of guidelines or instructions that tell you what to do.
The teacher set a rule that everyone must be quiet during the test.
老师制定了一个规则,考试期间每个人都必须保持安静。
A principle that explains how something works or is done.
Can you tell me the rule for making the past tense of verbs?
你能告诉我动词过去时态的构成规则吗?
Advice on how to act in a certain situation.
The guidebook gives a rule of thumb for choosing the best wine.
这本指南提供了一个选择最佳葡萄酒的经验法则。
A usual way that something happens or is done.
As a rule, he arrives home before 6 PM.
通常,他都在下午6点前到家。
The act of having control or power over something or someone.
Under the new rule, citizens have more rights.
根据新规定,公民拥有更多的权利。
A tool with a straight edge for drawing lines.
Please pass me the rule so I can finish this drawing.
请递给我直尺,这样我就可以把这幅图画完。
To have control or authority over something or someone.
The king rules the kingdom with wisdom.
国王以智慧统治着王国。
To be the main influence on something or someone.
Fear ruled his every decision.
恐惧左右了他的每一个决定。
To make an official decision about something.
The judge will rule on the case next week.
法官将在下周对此案作出裁决。
To draw a straight line using a straight edge.
Use a rule to make sure the lines on your paper are straight.
使用直尺确保你纸上的线条是直的。