Artificial muscles can generate electricity during constriction. The electricity may even charge up your mobile phone.
人造肌肉能在收缩过程中产生电力。这种电力未来甚至能为手机充电。
The airline didn't even charge him for the extra luggage.
航空公司甚至都没有收取他超重的那部分行李费。
It's a good idea to carry plenty of spare change when you're traveling - some places even charge extra for toilet paper!
旅行时带够充足的零钱会是一个好主意。一些地方甚至会需要额外付费，才有卫生纸。
It can not only repair itself but also generate electricity during constriction. The electricity may even charge up your mobile phone or MP3 player in the future.
这种人造肌肉不仅能自我修复，而且还可以在运动收缩过程中产生电力，未来甚至能为手机或MP3播放器充电。
It can not only repair itself but also generate electricity during constriction. The electricity may even charge up your mobile phone or MP3 player in the future.
这种人造肌肉不仅能自我修复，而且还可以在运动收缩过程中产生电力，未来甚至能为手机或MP3播放器充电。
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