She is sixteen but has a mental age of five.

　　她十六歲，而智力年齡是五歲。

　　He left home at sixteen.

　　他十六歲時離家獨立生活。

　　Round here, you leave school at sixteen and next thing you know, you're married with three kids.

　　這一帶的人十六歲中學畢業(yè)，接著就結婚，生三個孩子。

　　The last time I saw her was about sixteen years ago

　　我上次見她大約是16年前了。

　　Sixteen teams are taking part, divided into four groups

　　有16個隊參加，分為4組。