Valid Per-cent有效比例
per-cent completion完成百分率
per r cent百分之;百分率
per capita cent百分比
ventilatory reserve per-cent通气储量百分比
The Seven-Per-Cent Solution百分之七的溶液;百分之七溶液
hundred-per-cent bar chart百分比条图;百分点条图
hundred-per-cent barchart百分比条图
Mean Per- cent Squared Error平均均方误差百分比
N-COUNT（可数名词） You use per cent to talk about amounts. For example, if an amount is 10 per cent (10%) of a larger amount, it is equal to 10 hundredths of the larger amount. 百分数 (通常用%表示)
Sixteen per cent of children live in poverty in this country.
这个国家百分之十六的孩子生活在贫困中。
ADJ（形容词） Per cent is also an adjective. 百分之…的 [ADJ n]
...a 15 per cent increase in border patrols.
…边境巡逻15%的增加。
ADV（副词） Per cent is also an adverb. 百分之…地 [ADV with v]
He predicted sales will fall 2 per cent to 6 per cent in the second quarter.
他预计第二季度的销售量将下降2%至6%.