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連用抱怨

• about:    adv. 1.大約，差不多；前后，左右。 About a ...

例句與用法

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1. It has a half-life of about 41/2 billion years .
   它的半衰期大約為45億年。
2. They are of about the same strength .
   他倆力氣不相上下。
3. The mine had yielded a total of about 3714 tons of coal .
   這座礦已生產了3714噸煤。
4. Seawater invades for a distance of about 50 miles upstream .
   海水浸入上游遠至50英里。
5. He was a pert little blonde of about six years .
   他是個唐突而漂亮的小孩，大約六歲左右。