to stem from的意思|示意

This behavioral asymmetry is thought to stem from the same preference for head turning during the final weeks of gestation and during infancy.

这种方向上的不对称性似乎是源于妊娠后期及婴儿期转头的偏好。

In truth, the biggest threats to Russia's future stem not from its "enemies" but from internal weaknesses, some of them self-inflicted.

本质上，俄罗斯未来最大的威胁并非来自她的“敌人”，而是源于内部的虚弱，其中有些是自己造成的。

Scientists are using a new stem cell technique allowing them to turn skin from patients into small pieces of brain.

科学家使用一种新的干细胞技术，使他们可以将病人的皮肤转变为小块的大脑。

The birth of yet another laboratory mouse is hardly worth noting — unless the furry creature is the first to be developed from stem cells that do not involve embryonic cells.

通常一只还未出生的实验室老鼠很难引人关注，除非这个长毛的动物将是首个用干细胞培育出的老鼠（不涉及胚胎版细胞）。

To restore hearing, researchers still have to figure out how to produce millions of hair cells, prevent stem cells from forming tumors, and translate the work to human cells.

为了重建听力，科学家们还必须研究出如何大量生产毛细胞，如何避免干细胞形成肿瘤，以及如何应用于人类的细胞。

According to the survey, that lack of enthusiasm could stem from concerns about privacy and security.

调查显示，缺乏热情可能源于对隐私和安全的担忧。