rule

control, direct, govern, manage, rule, supervise, administer

law, constitution, regulation, code, rule, act

名词 rule:

1. a principle or condition that customarily governs behavior
   同义词：regulation
2. something regarded as a normative example
   同义词：convention, normal, pattern, formula
3. prescribed guide for conduct or action
   同义词：prescript
4. (linguistics) a rule describing (or prescribing) a linguistic practice
   同义词：linguistic rule
5. a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct
   同义词：principle
6. a rule or law concerning a natural phenomenon or the function of a complex system
   同义词：principle
7. the duration of a monarch's or government's power
8. dominance or power through legal authority
   同义词：dominion
9. directions that define the way a game or sport is to be conducted
10. any one of a systematic body of regulations defining the way of life of members of a religious order
11. (mathematics) a standard procedure for solving a class of mathematical problems
    同义词：formula
12. measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths
    同义词：ruler

动词 rule:

1. exercise authority over; as of nations
   同义词：govern
2. decide with authority
   同义词：decree
3. be larger in number, quantity, power, status or importance
   同义词：predominate, dominate, reign, prevail
4. decide on and make a declaration about
   同义词：find
5. have an affinity with; of signs of the zodiac
6. mark or draw with a ruler
7. keep in check
   同义词：harness, rein

1. 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。
2. As a rule, I'm home by six.
   我通常六点在／到家。
3. Charles ruled England for 11 years.
   查理一世统治英国11年。
4. Fair weather was the rule yesterday.
   昨天天气普遍晴朗。
5. It's against the rule to pick up the ball.
   捡球是犯规的。

rule

n.（名词）

Governing power or its possession or use; authority.
权威：统治的权力或其占有及运用；支配
The duration of such power.
统治期：这种权力的持续时期

An authoritative, prescribed direction for conduct, especially one of the regulations governing procedure in a legislative body or a regulation observed by the players in a game, sport, or contest.
规则，规定：权威性的成文的行为规范，尤指规范立法机构的程序的规则和游戏、运动或比赛当中参加者必须遵守的规则
The body of regulations prescribed by the founder of a religious order for governing the conduct of its members.
教规，条例，教条：某宗教派别的建立者为控制其成员的行为而规定的一系列条例
A usual, customary, or generalized course of action or behavior:
常规，惯例：某种行为或运动的通常的、习惯性的或大众化了的过程：
例句：
.The rule of life in the defense bar ordinarily is to go along and get along.(Scott Turow)
.受刑者的生活常规是数着日子过天.(斯科特·图罗)

A generalized statement that describes what is true in most or all cases:
规律，法则：总结出的确定大多数或所有情况下什么是正确的陈述：
例句：
In this office, hard work is the rule, not the exception.
在这个办公室里，努力工作是法则，而非例外情况

Mathematics A standard method or procedure for solving a class of problems.
【数学】 解法：解决一类问题的惯常方法或过程
Law
【法律】
A court order limited in application to a specific case.
裁决，裁定：仅适用于某一特定案例的法院条令
A subordinate regulation governing a particular matter.
附属条文：应用于某一特定案子的附属规定
See ruler
参见 ruler
Printing A thin metal strip of various widths and designs, used to print borders or lines, as between columns.
【印刷术】 线，线条：宽度和设计不一的一种细金属条，用于印刷边界或线，如栏目之间的
v.（动词）
ruled,rul.ing,rules
v.tr.（及物动词）
To exercise control, dominion, or direction over; govern.
统治，管辖：行使控制，统治或命令；治理
To dominate by powerful influence.
控制，支配：通过有力影响控制
To decide or declare authoritatively or judicially; decree.See Synonyms at decide
裁决，裁定：作出权威地或司法地决定或裁定；判决参见 decide

To mark with straight parallel lines.
划平行线：用直的平行线标出
To mark (a straight line), as with a ruler.
（如用尺子）画出（直线）
v.intr.（不及物动词）
To be in total control or command; exercise supreme authority.
统治：完全控制或指挥；行使最高权力
To formulate and issue a decree or decision.
作出裁定：制订并发布命令或决定
To prevail at a particular level or rate:
保持某一水平：在某一特定水平或速度上占优势：
例句：
Prices ruled low.
物价一直保持很低

<常用词组>rule out
To prevent; preclude:
避免；排除在外：
例句：
The snowstorm ruled out their weekly meeting.
暴风雪使他们一周一次的会议无法举行

To remove from consideration; exclude:
不考虑；排除出去：
例句：
The option of starting over has been ruled out.
重新开始这种选择已被排除考虑

<习惯用语>as a rule
In general; for the most part:
通常；总体上：
例句：
As a rule, we take the bus.
通常，我乘公共汽车

来源：
Middle English reule
中古英语 reule
from Old French
源自 古法语
from Vulgar Latin *regula
源自 俗拉丁语 *regula
from Latin rôgula [rod, principle] * see reg-
源自 拉丁语 rôgula [权力，原则] *参见 reg-

【引伸】
rul.able
adj.（形容词）