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.

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