twenty [数词] 二十 Ex: I have twenty apples , and I 'm planning to make a delicious pie with them . 我有二十个苹果,我计划用它们做一个美味的派。
fifty [数词] 五十 Ex: The recipe calls for fifty grams of sugar to create the perfect balance of sweetness . 食谱需要五十克糖来创造完美的甜味平衡。
seventy [数词] 七十 Ex: She celebrated her seventy birthday with a big party at her favorite restaurant . 她在她最喜欢的餐厅举办了一个盛大的派对来庆祝她的七十岁生日。
eighty [数词] 八十 Ex: She has been practicing the piano for eighty minutes every day to prepare for the concert . 她每天练习钢琴八十分钟为音乐会做准备。
ninety [数词] 九十 Ex: There are ninety minutes in a standard soccer match , divided into two halves . 一场标准足球比赛有九十分钟,分为两个半场。