HTMLMediaElement.prototype,
这是因为当时多家医院在孕产妇的登记入院上存在漏洞。对于前来生产的产妇，医院并不需要她们持本人身份证去办理住院登记。代孕中介会用客户的身份证办理住院手续，产妇则以客户的身份住院。生产后办理证明时，孩子自然成了客户的。而真正生育孩子的孕妈，其真实身份和信息都被隐去。
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Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
第二盏灯：位置在右下方 (1, -2, -4)，负责照亮物体的背面或暗部。