记忆方法
将“backpack”分解为“back”和“pack”。想象一个背包被放置在背部，即“back”，用于装载物品，“pack”代表装载的动作，这样就能形象地记住“backpack”这个单词的含义，即“背包”。
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英语词源
- backpack
- 1914 as a noun, 1916 as a verb, from back (n.) + pack (n.). Related: Backpacked; backpacking.
权威例句
- 1. Looking back, she feels she should never have hung up her backpack.
- 回首过去，她觉得自己真不该放下背包不再徒步旅行。
- 2. He squirmed out of the straps of his backpack.
- 他扭动身体，挣开背包的肩带。
- 3. She found a seat, stowed her backpack and sat down.
- 她找到一个座位，把背包放好，坐了下来。
- 4. This suitcase, and a backpack.
- 这个手提箱和背包.
- 5. Let me take my camera out of my backpack.
- 让我把相机从我的背包里拿出来.