New Words：

hammer [ˈhæmər]
n.锤子；榔头
v.锤打

milk [mɪlk]
n.乳汁；乳液；（牛或羊等的）奶
v.挤奶

Sample Sentences：

Someone was hammering at the door.
Now, hand me the hammer and those nails, please.
I was so scared my heart was hammering in my chest.
She hammered the nail into the wall with the hammer.
The farmer showed us how to milk the cow.

chest [tʃest] n. 胸部;胸膛

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