He bought fifty apples from the market.
他从市场买了五十个苹果。
She donated fifty dollars to the charity.
她向慈善机构捐赠了五十美元。
The book has fifty chapters in total.
这本书一共有五十章。
They planted fifty trees in the park.
他们在公园里种了五十棵树。
He can do fifty push-ups in one go.
他一次可以做五十个俯卧撑。
The package weighs fifty kilograms.
这个包裹重五十公斤。
She celebrated her fifty birthday last week.
她上周庆祝了她的五十岁生日。
There are fifty states in the USA.
美国有五十个州。
He read fifty pages of the book.
他读了这本书的五十页。
The car can go up to fifty miles per hour.
这辆车时速可达五十英里。
fifty years old 五十岁
fifty percent 五十百分比
fifty states 五十个州
fifty dollars 五十美元
fifty shades of gray 五十度灰