arm 
英 [ɑːm]  美 [ɑrm] 
n. 手臂；武器；袖子；权力

v. 武装；备战；准备；装备

例句：
She stretched her arms out. 

她展开了双臂。

She put her arm around his neck. 

她一只手搂住了他的脖子。

He struck a match, and held it at arm's length. 

他划了根火柴，伸直胳膊举着。

She took her arm and guided her across the busy road. 

她挽着她的手臂领她横穿过繁忙的公路。

Blood poured from the deep cut on his arm. 

鲜血从他手臂上深深的伤口中涌出。

Leave go of my arm ─ you're hurting me! 

放开我的手臂——你把我弄痛了！