名詞 arm:

1. a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb
2. any instrument or instrumentality used in fighting or hunting
   同義詞：weapon, weapon system
3. an administrative division of some larger or more complex organization
   同義詞：branch, subdivision
4. any projection that is thought to resemble a human arm
   同義詞：branch, limb
5. the part of an armchair or sofa that supports the elbow and forearm of a seated person
6. the part of a garment that is attached at the armhole and that provides a cloth covering for the arm
   同義詞：sleeve

動詞 arm:

1. prepare oneself for a military confrontation
   同義詞：build up, fortify, gird
2. supply with arms

1. He fled to Brazil trying to escape the long arm of the law.
   他逃到巴西，企圖逃避恢恢法網(wǎng)。
2. His left arm was hurt in an accident.
   他的左胳膊在一次事故中受傷了。
3. The new battleship shall be armed with 16-inch guns.
   新戰(zhàn)艦將以16英寸口徑的大炮武裝起來。
4. They were not allowed to use arms.
   不許他們使用武器。
5. Justice has long arms.
   天網(wǎng)恢恢，疏而不漏。

arm

n.（名詞）
An upper limb of the human body, connecting the hand and wrist to the shoulder.
臂：人體的上肢，連接手及手腕和肩膀
A part similar to a human arm, such as the forelimb of an animal or a long part projecting from a central support in a machine.
臂狀物：與人體上肢相似的部分，如動物的前肢或機器上從中間支撐部位伸出的部分
Something, such as a sleeve on a garment or a support on a chair, that is designed to cover or support the human arm.
扶手，衣袖：用以覆蓋或支撐人體胳膊的東西，如衣服的袖子或椅子的扶手
A relatively narrow extension jutting out from a large mass:
港灣：從一大的整體中伸出的較為狹窄的延伸部分：
例句：
an arm of the sea.See Synonyms at branch
海灣參見 branch

An administrative or functional branch, as of an organization.
分部：一個行政或職能分支，如一組織
Power or authority:
權(quán)力，權(quán)威：
例句：
the long arm of the law.
法律的強大威力

<習(xí)慣用語>an arm and a leg【俚語】
An excessively high price:
非常高的價格：
例句：
a cruise that cost an arm and a leg.
要花去好多錢的航行

at arm`s length
At such a distance that physical or social contact is discouraged:
保持距離：以這樣一個距離不鼓勵身體的或社交的接觸：
例句：
kept the newcomer at arm`s length at first.
一開始對新來的人保持一定距離

with open arms
With great cordiality and hospitality.
特別熱情和好客
來源：
Middle English
中古英語
from Old English earm * see ar-
源自 古英語 earm *參見 ar-

arm
arm 2

n.（名詞）
A weapon, especially a firearm:
武器：一件武器，尤指槍：
例句：
troops bearing arms; ICBMs, bombs, and other nuclear arms.
荷槍實彈的軍隊；洲際彈道導(dǎo)彈，炸彈和其他核武器

A branch of a military force:
軍種：軍事力量的一個分支：
例句：
infantry, armor, and other combat arms.
步兵，裝甲兵和其他作戰(zhàn)兵種

arms
arms
Warfare:
軍事行動：
例句：
a call to arms against the invaders.
抗擊侵略者的戰(zhàn)斗號令

Military service:
兵役：
例句：
several million volunteers under arms; the profession of arms.
幾百萬服現(xiàn)役的志愿兵；軍人職業(yè)

arms
arms
Heraldry Bearings.
【紋章學(xué)】 圖案
Insignia, as of a state, an official, a family, or an organization.
（如國家，官員，家庭或組織的）徽章
v.（動詞）
armed,arm.ing,arms
v.intr.（不及物動詞）
To supply or equip oneself with weaponry.
武裝起來：給自己提供或裝備武器
To prepare oneself for warfare or conflict.
備戰(zhàn)：使自己準(zhǔn)備參加戰(zhàn)斗或戰(zhàn)爭
v.tr.（及物動詞）
To equip with weapons:
武裝：用武器裝備：
例句：
armed themselves with loaded pistols; arm a missile with a warhead; arm a nation for war.
用裝有子彈的手槍武裝他們；給導(dǎo)彈裝上彈頭；全民武裝以備戰(zhàn)

To equip with what is needed for effective action:
提供：配備有效行動所必需的東西：
例句：
tax advisers who were armed with the latest forms.
備有最新表格的稅務(wù)顧問

To provide with something that strengthens or protects:
有保護(hù)作用的配備：提供起加強或保護(hù)作用的配備：
例句：
a space reentry vehicle that was armed with a ceramic shield.
重返大氣層航天運載工具配備陶瓷保護(hù)層裝置

To prepare (a weapon) for use or operation, as by releasing a safety device.
打開保險裝置：使（武器）處于可使用或操作的狀態(tài)，如打開保險裝置

<習(xí)慣用語>up in arms
Extremely upset; indignant.
非常地沮喪；憤怒的
來源：
Middle English armes [weapons]
中古英語 armes [武器]
from Old French
源自 古法語
from Latin arma
源自 拉丁語 arma
V., from Middle English armen
動詞，源自 中古英語 armen
from Old French armer
源自 古法語 armer
from Latin arm3re
源自 拉丁語 arm3re
from arma [arms] * see ar-
源自 arma [軍備] *參見 ar-

【引伸】
arm.er
n.（名詞）