Part 2：下降現象／趨勢

8. During this two-year period, the oil prices *plunged大跌 almost one third.

在這兩年期間，石油價格大跌近三分之一。

9. Our average income *slid下滑 from $60,000 to $46,000 from 2018 to 2019.

從2018年到2019年，我們公司平均收入從6萬元下滑到4萬6千元。

10. The students' average test scores went down 14 points last school year.

學生的平均考試成績在上學年下跌14分。

11. Between second quarter and this quarter, the number of people hired was cut from 89 to 59.

在第二季和本季之間，僱用的人數從89人下降到59人。