您要查找的是不是：
- 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。
- Portable telephones are very popular nowadays. 现今，移动电话非常普及。
- portable sonar 便携式声纳
- 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 document had been typed on a small portable. 这份文件是用便携式打字机打的。
- 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。
- 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。
- Our main detection device is sonar. 我们主要的探测装置是声波定位仪。
- I'm getting a strong response on the sonar. 我在声纳上测得强力反应。
- The whales need sonar to find food. 而鲸鱼就是靠这种能力来寻找食物的。
- Do you sell portable cassette players? 卖手提卡式放音机吗？
- We sat listening to the chat-chat-chatof the sonar. 我们坐下来听声纳的嚓嚓嚓声。
- Cavitation is noisy and easily detected by sonar. 空泡现象是有噪声的并且容易被声纳探测到。
- A trademark used for portable bathing devices for infants. 折叠式婴儿浴盆一种商标名，用于婴儿的轻便洗澡用具
- Sub collides with US destroyer's sonar. 中国潜艇与美驱逐舰声纳相撞。
