30的英语thirty；
例句
Six goes into thirty five times.
6除30得5。
By this time he was thirty.
到这时他30岁了。
Thirty-four of his wins were KO\'s.
他有34次击倒对手获胜。
The car cost a cool thirty thousand.
那辆车花了整整三万。
I crawled out of bed at nine-thirty.
930我才慢慢地爬下床。
It was eight-thirty, Trevor\'s bedtime.
八点三十分是特雷弗的就寝时间。
