五年前，在世界上唯一的梅里克海龟的筑巢地——贝克海滩，发生了一起重大的化学物质泄漏事件，导致当年几乎所有的海龟卵无法孵化。
A major chemical spill occurred five years ago at Baker's Beach, the world's sole nesting ground for Merrick sea turtles, and prevented nearly all the eggs laid that year from hatching.
将这些卵收集起来，在其卵裂前注入外来基因物质。
The eggs are collected before they divide and are injected with the foreign genetic material.
在排卵前通常是注射人绒毛膜促性腺激素后34—36小时取卵。
The eggs are retrieved before ovulation occurs, usually 34 to 36 hours after the hCG injection is given.
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