pound
单词辨析：
尤指心脏有规律地跳动，或指鸟类有节奏地拍打翅膀。
Her heart is beating fast.
她的心跳得很快。
The birds are beating their wings.
鸟儿扑扇着翅膀。
特指鸟儿或有翅膀的昆虫快速而轻轻地振动翅膀。
The young bird fluttered her wings up and down, hoping to fly.
小鸟上下拍动着翅膀，想要飞起来。
The bees are fluttering among the flowers.
蜜蜂在花丛中飞舞。
指激动、生气、愤怒等时心脏剧烈地跳动；也指使劲地连续击打。
His heart pounded with anger.
他气得心脏怦怦直跳。
He pounded the table angrily.
他气得猛拍桌子。
He was pounding on the door.
他在砰砰地敲门。
指心脏、动脉等有规律地振动或有节奏地舒张和收缩。
His heart pulsated with excitement.
他激动得心脏怦怦直跳。
She felt her heart pulsate with the aftershock.
她感觉自己的心在随着余震一起跳动。
We could see the veins in her neck pulsating.
我们看到她脖子上的血管在跳动。
指因恐惧或激动而心脏怦怦直跳。
His heart thumped with fear.
他吓得心怦怦直跳。
My heart began to thump wildly.
我的心开始狂跳起来。
普通用词，指圈养鸟兽的器物，通常用铁丝或铁条制成。
a bird/squirrel cage
鸟笼/松鼠笼
The tiger paced the floor of his cage restlessly.
老虎烦躁地在兽笼里走来走去。
尤指动物园的大型鸟舍或鸟类饲养场。
There we saw many different kinds of birds in the aviary.
在那里，我们看到大鸟笼里有很多不同种类的鸟。
指关养家禽、兔子等小型动物的笼子或栏舍，尤指鸡笼。
a coop for keeping poultry
饲养家禽的笼子
Who is the man standing near the chicken coop?
站在鸡笼边上的那个人是谁？
指收留走失的狗或猫的地方，在此处这些动物由专人看管，直到其主人前来认领为止。
There's a dog pound on the corner.
拐角处有个走失宠物狗待领所。
相关例句：
The fare from the last unmanned station is probably less than a pound
从上一个无人站过来的费用可能还不到1镑。
Somebody began pounding on the front door
有人开始不停地猛敲前门。
Her weight was under ninety pounds.
她的体重不足90磅。
The drop was caused partly by the pound's strength against the dollar.
下降的部分原因在于英镑对美元的升值。
The price per pound works out at £ 3.20
每磅价格合计3.20英镑。
Beef now costs well over 30 roubles a pound
牛肉现在卖到了每磅30多卢布。