Screw while having dry absorption capacity, but it must be to prevent the stem turn, so as not to scratch the surface of the work.

螺杆泵虽然具有干吸能力，但是必须防止干转，以免擦伤工作表面。

The reason embryonic stem cells are valued by scientists is that the cells' descendants can turn into any other sort of body cell.

科学家们认为胚胎干细胞有价值是因为，胚胎干细胞可以发育成为任何其他种类的体细胞。

Therapies using stem cells, or cells derived from embryos that can turn into myriad cell types, can potentially restore normal hearing.

干细胞(也就是可分化为胚胎来源、可分化为多种细胞的细胞)疗法，可能恢复正常的听力。

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。

They are a special risk with stem cells precisely because such cells can turn into any other sort.

对干细胞来说他们是一种特殊的风险，因为这种细胞能分化成任何其他种类。