30用英文怎么说怎么写
时间：
"30" 用英语说为 "thirty".
来源：英文数字是由拉丁语借鉴而来，"thirty" 来自于拉丁语 "triginta"，意为 "三十"。
例句：
He is thirty years old. (他三十岁了。)
The cost is thirty dollars. (花费是三十美元。)
She has thirty books in her collection. (她的收藏里有三十本书。)
来源：英文数字是由拉丁语借鉴而来，"thirty" 来自于拉丁语 "triginta"，意为 "三十"。
例句：
He is thirty years old. (他三十岁了。)
The cost is thirty dollars. (花费是三十美元。)
She has thirty books in her collection. (她的收藏里有三十本书。)