刘成选了另一条路。2025年，在多次反馈和协调下，夫妻俩为孩子拿到了《出生医学证明》。不过，证明上仅写有代孕母亲的名字，父亲栏则为“/”。
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。PDF资料是该领域的重要参考
Johnston, Andrew and Christos Makridis, "The labor market effects of generative AI: A difference-in-differences analysis of AI exposure," Available at SSRN 5375017, 2025.
Hall had asked the F.B.I. for help searching the jail. The F.B.I. enlisted Customs and Border Protection, which uses advanced electromagnetic scanners to search suspect vehicles. At the jail, technicians from the two agencies wired a scanner to a signal amplifier, allowing them to peer through cinder block, metal, and other materials without causing damage. The device was mounted on a trolley and rolled by every wall in the jail, looking for the “hot spots” where Friedmann had embedded weapons. By March of 2020, they’d found more than twenty. Crime-scene investigators bored holes and pulled out a succession of neat plastic packages containing razors, saw blades, handcuff keys, and security bits. The prosecutors called these “escape kits.”
，这一点在PDF资料中也有详细论述
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