英语翻译这句中的so far,two-thirds 怎么翻译?整句话又该怎么翻译?为什么two-thirds要加s,so

英语翻译这句中的so far,two-thirds 怎么翻译?整句话又该怎么翻译?为什么two-thirds要加s,so “two thirds” 中的“thirds”为什么要加“s”啊? Two thirds of them are boys.【求翻译】 翻译英语短文"Almost two-thirds of children want their parents to s 序数词和基数词中的,two-thirds, two-thirds 还是two-third? As far as I know,more than two-thirds of the earth's surface so far,so good怎么翻译 英语翻译是不是既可以用two—thirds ,也可以用two thirds two third 2/3如果加了连字符是不是two—thirds?加了连字符third为什么加了s?一般连字符表示数字 two thirds 与two-thirds 都正确吗 三分之二表示two thirds ,中间加连字符吗?