Corasil
(液体色谱固定相)表面多孔的玻璃珠
🗣️ 情景例句
We've called it quits.
我们决定放弃（我们之间的关系了）。
Who is the auther of this biography?
谁是这篇传记的作者？
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。