而后煮沸、漂白、晾干这些骨殖，并抽去骨髓——她形容这是“最触动感情的工序”，最后再将骨头封上一层聚氨酯外壳。

Then she boiled, bleached, and dried the bones, drilling out the marrow to remove, as she described it, "the gushy parts. " A coat of urethane sealed them shut.

youdao

而后煮沸、漂白、晾干这些骨殖，并抽去骨髓——她形容这是“最触动感情的工序”，最后再将骨头封上一层聚氨酯外壳。

Then she boiled, bleached, and dried the bones, drilling out the marrow to remove, as she described it, "the gushy parts." a coat of urethane sealed them shut.

youdao

所用的防紫外线的油漆与汽车喷漆的硬度相当，最外面一层是不光滑或者说是半抛光丙乙烯材质外壳提供了进一步的保护。

The UV-cured ink has a similar hardness to automotive paint, and a final coat of matte or semi-gloss acrylic further protects the colored surface.

youdao

So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.

那么让我们来做一个小选择题，请大家来告诉我,氟有多少个价电子，要记得，价电子与芯电子不同，它们是在最外壳层的最靠外面的电子。

麻省理工公开课 - 化学原理课程节选