1.period 周期
Use of computers spread rapidly during that period.
在那個時期,計算機的應用迅速流傳開來 。
2.inflation 膨脹
Inflation is a constant threat.
通貨膨脹是一種持續的威脅 。
3.shrink 縮小
He shrank back against the wall as he heard them approaching.
聽見他們朝這邊來,他退到墻根 。
4.recession 衰退
The economy is precariously close to recession.
經濟瀕于衰退的邊緣 。