- each of the two upper limbs of the human body from the shoulder to the hand手臂：
she held the baby in her arms.
她把婴孩抱在怀里。
- each of the forelimbs of an animal（动物的）前肢。
- a flexible limb of an invertebrate animal, e.g. an octopus.（无脊椎动物如章鱼等的）灵活的肢体。
- a sleeve of a garment（衣服的）袖子。
- an ability to bowl, pitch, or throw a ball skillfully（熟练投球、掷球或抛球的）能力：
he has a good arm.
他是投球高手。
- used to refer to the holding of a person's arm in support or companionship手臂（挽住以示支撑或陪伴）：
as they walked he offered her his arm
他们走着的时候, 他让她挽住他的手臂
he arrived with a pretty girl on his arm.
他手挽着一个漂亮女孩来了。
- used to refer to something perceived as powerful or protective用于表示力量或保护手臂：
they have extended the arm of friendship to developing countries.
他们将友谊之手伸向了发展中国家。
- a thing resembling an arm in form or function, in particular（形状, 功能）像手臂的东西, 尤指：
- a side part of a chair or other seat on which a sitter can rest their arm（椅子或座位的）扶手。
- a narrow strip of water or land projecting from a larger body狭长的延伸出的陆地; 狭长港湾
- a large branch of a tree大树枝。
- figurative a long, narrow shape or object〈喻〉长而窄的形状（或物体）：
a long arm of sunshine.
一片狭长的阳光。
- a branch or division of a company or organization（公司或组织的）部门：
the political arm of the separatist group.
分裂主义集团的政治部门。
- one of the types of troops of which an army is composed, such as infantry or artillery兵种（如步兵, 炮兵）。
- ORIGIN: origin: also understood as a figurative use of ARM2.
- Mathematics each of the lines enclosing an angle【数】形成角的边。
arm in arm
- (of two or more people) with arms linked（两人或多人）臂挽臂地。
as long as one's（或 someone's）arm
- informal very long〈非正式〉很长, 十分长：
I have a list of vices as long as your arm.
我的恶习一大堆。
at arm's length
- away from the body, with one's arm fully extended以一臂之远, 在伸手可及之处：
I held the telephone at arm's length.
我把电话放在我伸手可及的地方。
beyond arm's reach
- 见后面within arm's reach.
cost an arm and a leg
- informal be extremely expensive〈非正式〉十分昂贵的。
give one's right arm
- informal used to convey how much one would like to have or do something〈非正式〉付出极大的代价：
I'd give my right arm to go with them.
为了和他们一起去, 我愿付出极大代价。
in arms
- (of a baby) too young to walk（婴儿）只能抱在怀里, 太小不会走路：
a babe in arms.
还抱在怀里的小孩。
into the arms of
- into the possession or control of被…拥有; 受…控制：
the violin passed into the arms of a wealthy dilettante.
那把小提琴落到了一个对音乐一知半解的有钱人手里。
keep someone/thing at arm's length
- avoid intimacy or close contact with someone or something避免与（人, 物）亲近（或接近）。
the long（或strong）arm of
- the far-reaching power, authority, or influence of深远的威力（或权力、影响）：
the long arm of the law caught up with him.
他终于难逃法网。
put the arm on
- N. Amer. informal attempt to force or coerce (someone) to do something〈北美, 非正式〉强迫, 迫使, 胁迫：
she started putting the arm on them for donations.
她开始强迫他们捐钱。
under one's arm
- between one's arm and one's body在腋下：
Meryl tucked the papers under her arm.
梅里尔把文件夹在腋下。
with open arms
- with great affection or enthusiasm友好地, 热烈地：
schools have welcomed such arrangements with open arms.
学校十分欢迎这样的安排。
within（或beyond）arm's reach
- near (or not near) enough to reach by extending one's arm伸手可及（或不可及）的。
armful
noun （pl.-fuls）armless
adjective- supply or provide with weapons（以武器）装备：
both sides armed themselves with grenades and machine guns.
双方都用手榴弹和机枪武装自己。
- supply or provide with equipment, tools, or other items in preparation or readiness for something提供（设备、工具或其他物品）：
she armed them with brushes and mops.
她给他们刷子和拖把。
- activate the fuse of (a bomb, missile or other explosive device) so that it is ready to explode使（炸弹、导弹或其他爆炸装置）处于准备引爆的状态。