1、twenty作名词是二十、二十个、二十岁、许多的意思。
2、space for twenty people：可容纳20个人的空间。
3、They're both in their twenties and both married with children of their own.他们俩都二十岁了，但已经都结婚生子了。
4、It had taken Masters about twenty hours to reach the house.马斯特用了二十个钟头才到了那所房子。
5、twentieth是数字二十的序数词，in your twentieth：20多岁。
