9的英文是nine。
读音：英［naɪn]，美［naɪn]。
释义：
num.九；
n.九；九个（人或物）；表示九的符号；九个（人或物）一组；编号为9的东西。
adj.九的，九个的。
例句：You'll have your work cut out to get there by nine o'clock.
你九点钟前赶到那里可不容易。
变形：复数nines。
短语：
nine tenths十分之九
nine needles九针
Nine Lives九条命
Nine Songs九首歌
nine ministers九卿
有关nine的俚语
1、nine to five朝九晚五的
She's tired of working nine to five.
她厌倦了朝九晚五的工作。
2、be a nine days' wonder是昙花一现的新鲜事物
The band's biggest fear was becoming a nine-day wonder, soon to be forgotten when the next big sound hit the airwaves.
乐队最害怕的就是昙花一现，当有新的音乐出现在电视广播的时候，很快就会被遗忘。
3、done/dressed (up) to the nines衣饰华丽
The doorbell rang and there was Chris, all dressed up to the nines.
门铃一响，衣着华丽的克里丝来了。
4、the whole nine yards能够拥有的
When I was little, my family always had lots of pets - dogs, cats, hamsters, fish, rabbits - the whole nine yards.
我小时候家里总是有许多宠物：狗、猫、仓鼠、鱼、兔子，应有尽有。
5、nineteen/ten to the dozen喋喋不休
My aunt can get talking nineteen to the dozen if you get her on a topic she's passionate about.
如果你让我姑姑谈论她热衷的话题，她就会滔滔不绝。