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n. 双肩背包，背包；远足用的背包 | vt. ...
防雨型动感数码背包
轻便运动型笔记本背包
可拆卸式电池组
There's also a trough for latching on an external battery or LCD touchscreen BacPac.
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The Wi-Fi BacPac and Wi-Fi Remote are also compatible with the original HD HERO camera, but functionality is limited to remote control only.
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BacPac and Wi-Fi Remote products.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。