媽媽70gallon重

從圖書館給小家夥借了本書--the mighty street sweeper，上麵有一頁說:the tanker truck holds 4000gallons of water. the street sweeper has a tank that holds 180 gallons of water.

有一天媽媽稱體重，小家夥象模象樣的走過來，蹲下看看體重稱的指針，認真的說:媽媽，你有70 gallon 重。