20 percent of the water we drink is dirtythe 要加上还是不加？water or the water

the lost of machine was reduced by 20 percent Photoshop uses 40 percent of the red and green channels and 20 percent of the blue channel怎么翻译 About 20 percent of the population of thisAbout 20 percent of the population of this city ___ （be） from the countryside. 这个空填什么? 几道简单的GRE数学题1 two successive discounts of 20 percent and 40 percent are equivalent to a single discount of x percent. x 522 the number of ¼-inch lengths in a 4-inch length What will happen to sales if Teaxo raises the price of unleaded gasoline by 20 percent? The goal of targeting is to zero in on that 20 percent.翻译~ 英语单词Percent用法Twenty percent of the students exercise for 4-6 times a week 中的percent为什么是单数. about 80 percent of the people live in the ___ and put about 85 percent of the waste into the 英语翻译40% of the students40% of students40% studentsforty percent of the studentsforty percent of studentsforty percent students究竟哪个正确呢?搞不清楚啊 more than 70[ percents] of the students [percent]为什么加S percent可数吗 英语翻译in this process of recrystallization,the growth of new crystals at the expense of old ones,the percentage of air is reduced from about 90 percent for snowflakes to less then 20 percent for glacier ice. This is ten percent luck,　　Twenty percent skill 　　Fifteen percent concentrated power of will 　　Five percent pleasure,　　Fifty percent pain 　　And a hundred percent reason to remember the name! This is ten percent luck,Twenty percent skill,Fifteen percent concentrated power of will,Five percent pleasure,Fifty percent pain,And a hundred percent reason to remember the name什么意思? 请求翻译一下这段话It's just ten percent luckTwenty percent skillFifteen percent concentrated power of willFive percent pleasureFifty percent painAnd a hundred percent reason to remember the name the other twenty percent of the students和another twenty percent of the students有区别吗 Fifty percent of the students 的同义句是? 25 percent of the people 为什么家加he