30的英文怎么拼

　　The driver was a trim young woman of perhaps thirty.

　　驾车者是一位大约三十来岁的苗条年轻女子。

　　If I might hazard a guess , I'd say she was about thirty.

　　让我来猜的话，我说她大约三十岁。

　　Yesterday no fewer than thirty climbers reached the summit.

　　昨天不少于三十名登山者到达了顶峰。