The lack of resistance in very cold metals may become useful in electronic computer.
这种在超低温中的金属没有电阻，可能对电子计算机很有用处。
Often eat mutton to improve people's physical quality and disease resistance is very useful.
常吃羊肉对提高人的身体素质及抗病能力十分有益。
Often eat mutton to improve people's physical quality and disease resistance is very useful.
常吃羊肉对提高人的身体素质及抗病能力十分有益。
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