New Words：
dizzy ['dizi] adj. 头晕的；眩晕的；头晕目眩的
dizziness ['dizinis] n. 头昏眼花；眩晕
tiredness ['taiədnis] n. 疲倦
Sample Sentences：
When he got up he felt dizzy.
We were dizzy by the strong wind.
Climbing so high made me feel dizzy.
After a hard day's work, the poor girl was half dead with tiredness.
The dizziness happened every two or three days, and lasted most of the day every time.
New Words：
spin [spin] v. 旋转
Sample Sentences：
My head was spinning from the wine.
The plane was spinning out of control.
My sister can spin on her toes like a dancer.
New Words：
pearl [pɜːrl] n. 珍珠
fist [fist] n.拳头
Sample Sentences：
The necklace is made of natural pearls.
Can you show me your latest pearl necklaces?
He was banging on the door with his fist.
New Words：
string [striŋ]
n.线；一连串
v.悬挂；系；扎；把…连在一起
strung [strʌŋ] 动词string的过去式与过去分词
Sample Sentences：
The key is hanging on a string by the door.
She wore a string of pearls around her neck.
A string of accidents happened at that corner.
These girls are stringing pearls.
Flags had been strung up across the street.
pearl [pɜːl] n. 珍珠
New Words：
mower ['məuə] n. 割草机
Sample Sentences：
The mower is covered with rust.
Do not lift the mower if the engine is running.
I borrowed a mower from my neighbor to cut grass in my garden.