单词有: ninety, eighty, twenty, fifty...Her weight was under ninety pounds.她的体重不足90磅。
You got here with ninety seconds to spare.你们到达这里时还剩有90秒钟。He's getting on for eighty.他近八十岁了。Eighty horses trotted up.80匹马小跑上来。I am twenty this year.我今年二十岁了。This toy is worth twenty.这个玩具价值二十美元。