名词
中文翻译：充电包
同义词：
['power bank', 'battery pack']
例句：
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1.The smartphone has a built-in charger that can be used to recharge the phone.
这款智能手机内置充电器，可以用来给手机充电。
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2. I need to charge my laptop before I start working on this project.
在开始这个项目之前，我需要给笔记本电脑充电。
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3. The power bank is small and lightweight, making it easy to carry around with you wherever you go.
这款移动电源体积小、重量轻，便于随身携带。