音標：thirty 英[ˈθɜ:ti] 美[ˈθɜ:rti]
意思：n. 三十，三十個 adj. 三十的，三十個的例句：She"s well over thirty, but still behaves as a child.她三十好幾歲了，行為舉止還很幼稚。
The building was built about thirty years ago. 這幢樓建於約30年前。
She was driving at thirty. 她車速30碼。
擴充套件資料：
1~30的英文具體如下：
1~10:1: one 2: two 3: three 4: four 5: five 6: six 7: seven 8: eight 9: nine 10: ten
11~20：11: eleven 12:twelve 13:thirteen 14:fourteen 15:fifteen 16:sixteen 17:seventeen 18:eighteen 19:nineteen 20:twenty
21~30： 21:twenty-one 22:twenty-two 23:twenty-three 24:twenty-four 25:twenty-five 26:twenty-six 27:twenty-seven 28:twenty-eight 29:twenty-nine 30:thirty
音標：thirty 英[ˈθɜ:ti] 美[ˈθɜ:rti]
意思：n. 三十，三十個 adj. 三十的，三十個的例句：She"s well over thirty, but still behaves as a child.她三十好幾歲了，行為舉止還很幼稚。
The building was built about thirty years ago. 這幢樓建於約30年前。
She was driving at thirty. 她車速30碼。
擴充套件資料：
1~30的英文具體如下：
1~10:1: one 2: two 3: three 4: four 5: five 6: six 7: seven 8: eight 9: nine 10: ten
11~20：11: eleven 12:twelve 13:thirteen 14:fourteen 15:fifteen 16:sixteen 17:seventeen 18:eighteen 19:nineteen 20:twenty
21~30： 21:twenty-one 22:twenty-two 23:twenty-three 24:twenty-four 25:twenty-five 26:twenty-six 27:twenty-seven 28:twenty-eight 29:twenty-nine 30:thirty