当我们注意到了建筑上可循环玻璃砖和用竹鞘保护起来的石柱，又不禁会问这些稀有而并不实用的材料是否真的有必要用？

And while we ran our fingers over recycled glass block and eyed bamboo-sheathed columns we couldn't help but notice the luxurious addition of some rare and not necessarily sustainable materials.

youdao

一切有血气的就知道我耶和华已经拔刀出鞘，必不再入鞘。

That all flesh may know that I the LORD have drawn forth my sword out of his sheath: it shall not return any more.

youdao

受到最高强度辐射的雄鼠有大约5%至7%患上了心脏神经鞘瘤，而对照组中没有此类病例。

About 5 to 7 percent of the male rats exposed to the highest level of radiation developed schwannomas in their hearts, compared with none in the control group.

youdao

If this is the particular kind of axon that is 'myelinated', then it might have a layer of a special substance called myelin in sheathing the axon.

假设这是一种特殊的有髓鞘的轴突,它表面上会像鞘一样地包裹上一层,称为鞘磷脂的特殊物质

耶鲁公开课 - 生物医学工程探索课程节选