例句：

　　Wine contains about 10% alcohol.

　　葡萄酒含有約10%的酒精。

　　He's very intense about everything.

　　他對一切都很熱心。

　　It's about 2 metres wide.

　　它大約2米寬。

　　He looked about the room.

　　他在房間里四下看了看。

　　I'm definite about this.

　　我對這事毫無疑問。

　　You're completely mistaken about Jane.

　　你對簡的看法完全錯(cuò)了。