One large candle on the birthday cake represents 10 years.
Each large candle on the birthday cake stands for 10 years.
上記の例文、"each"と"one"、"represents"と"stands for"を入れ替えることができます。
そうすると：
・"One large candle on the birthday cake stands for 10 years."
・"Each large candle on the birthday cake represents 10 years."
小さいろうそくが１歳を表すなら、下記になります：
・"One small candle on the birthday cake stands for 1 year."
・"Each small candle on the birthday cake represents 1 year."
アメリカ合衆国 
