您要查找的是不是：
- portable extinction photometer 手持式消光光度计
- We may live to see the extinction of the whale. 人类或许能亲眼见到鲸的灭绝。
- Bob tuned in his portable radio to a record show. 鲍伯收听手提收音机的唱片广播。
- Completely portable and very light weight. 便携式的，而且重量很轻。
- The race was threatened with extinction. 这个种族这时眼看要灭绝了。
- Portable telephones are very popular nowadays. 现今，移动电话非常普及。
- Nothing could rekindle her extinct passion. 她激情已逝，无从心回意转。
- My hope of getting some employment was extinct. 我要找到工作的希望落空了。
- He found that little TV extremely portable. 他觉得那台小小的电视机携带极其方便。
- I bought my son a portable typewriter. 我给儿子买了一台手提式打字机。
- The passenger pigeon is extinct. 旅鸽已绝种。
- Dinosaurs have been extinct for millions of years. 恐龙已绝种几百万年了。
- The document had been typed on a small portable. 这份文件是用便携式打字机打的。
- extinction photometer 消熄光度计
- The new portable computers are going like hot cakes. 新的便携式计算机卖得很快。
- She traded her roller-skates for Billy's portable radio. 她拿旱冰鞋换了比利的手提收音机。
- The documents have been typed into a portable computer. 文件已经被输入到一台便携式电脑里了。
- His movie of the extinction of dinosaurs was a great success. 他的关于恐龙灭绝的电影取得了巨大的成功。
- A human being is an ingenious assembly of portable plumbing. 人类，是一堆可以随意拆卸的铅管零件的巧妙装配。
- A human is an ingenious assembly of portable plumbing. 人类，是一堆可以随意拆卸的铅管零件的巧妙装配。
