Given the extraordinary diversity of life on the planet, there must be mechanisms for speciation: the formation of two species from one original species.
考虑到地球上的生命的非凡多样性，一定存在着形成物种的机制：从一个原始物种演变为两个物种。
This is not surprising, given that precipitation is one of the two external triggering mechanisms—the other being seismic activity—involved in the formation of landslides.
考虑到降水是涉及滑坡形成的两个外部触发机制之一——另一个是地震活动，这并不奇怪。
She had been researching mechanisms regulating early development and organ formation in mice using embryonic stem cells, which can develop into the multitude of cells that make body parts.
他在老鼠上使用胚胎干细胞研究机制调节和器官形成。胚胎干细胞能形成身体部位的多细胞。
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