用人造心脏来替代病变或者损坏的心脏一直是医学界的一个梦想。
It is a long-held dream: an artificial heart to replace one that is damaged or diseased.
用户应该觉得可以尝试各种功能而无需担心破坏系统或者损坏数据。
People need to feel that they can try things without damaging the system or jeopardizing their data.
使用信用卡来在线支付，大多数信用卡公司将帮助您排除不存在的或者损坏的产品。
Use a credit card for online purchases. Most credit card companies will help you with non-existent or damaged products.
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