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N-COUNT
手臂;上肢
Your arms are the two long parts of your body that are attached to your shoulders and that have your hands at the end.
例句
She stretched her arms out...
她张开双臂。
He had a large parcel under his left arm.
他左胳膊下夹着一个大包裹。
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N-COUNT
衣袖;袖子
The arm of a piece of clothing is the part of it that covers your arm.
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N-COUNT
（椅子的）靠手，扶手
The arm of a chair is the part on which you rest your arm when you are sitting down.
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N-COUNT
（物体的）臂，杆
An arm of an object is a long thin part of it that sticks out from the main part.
例句
...the lever arm of the machine.
机器的操纵杆
...the arms of the doctor's spectacles.
医生的眼镜腿
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N-COUNT
（陆地的）狭长地带;狭长港湾
An arm of land or water is a long thin area of it that is joined to a broader area.
例句
At the end of the other arm of Cardigan Bay is Bardsey Island.
在卡迪根湾的另一狭长地段的尾端是巴德西岛。
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N-COUNT
分支机构；部门
An arm of an organization is a section of it that operates in a particular country or that deals with a particular activity.
例句
Millicom Holdings is the British arm of an American company.
米雷康姆控股有限公司是一家美国公司在英国的分支机构。
...the research arm of Congress.
国会的研究部门
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PHRASE
臂挽臂地
If two people are walking arm in arm, they are walking together with their arms linked.
例句
He walked from the court arm in arm with his wife.
他和妻子挽着胳膊走出法庭。
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PHRASE
（价格）昂贵
If you say that something costs an arm and a leg, you mean that it is very expensive.
例句
A week at a health farm can cost an arm and a leg.
在健身中心呆一个星期的花费会很昂贵。
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PHRASE
一臂之远；在伸手可及处
If you hold something at arm's length, you hold it away from your body with your arm straight.
例句
He struck a match, and held it at arm's length.
他划亮一根火柴，伸长胳膊举着。
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PHRASE
与…保持距离
If you keep someone at arm's length, you avoid becoming too friendly or involved with them.
例句
She had always kept his family at arm's length.
她一直与他的家人保持一定距离。
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PHRASE
（清单）很长
If you say that a list is as long as your arm, you are emphasizing that it is very long.
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PHRASE
热烈地;友好地
If you welcome some action or change with open arms, you are very pleased about it. If you welcome a person with open arms, you are very pleased about their arrival.
例句
They would no doubt welcome the action with open arms...
他们无疑将热烈欢迎这一举动。
Many Panamanians welcomed the troops with open arms.
许多巴拿马人热烈欢迎部队到来。
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PHRASE
说服
If you twist someone's arm, you persuade them to do something.
例句
She had twisted his arm to get him to invite her.
她说服他向自己发出邀请。