Helf
[医][=human embryonic lung fibroblast]人胚肺成纤维细胞
🗣️ 情景例句
with Admissions at Columbia University.
与Columbia大学的招生人员。
It's bleeding.You'd better go see a doctor about that cut.
它正在流血. 你最好为那个刀口去看医生。
I was not surprised to find that the machine still refused to work after I had reassembled it,
等我装完后，那台割草机仍然一动不动，对此我倒并不感到吃惊。