Helf
[医][=human embryonic lung fibroblast]人胚肺成纤维细胞
🗣️ 情景例句
And there's so much to do.
而且这里总是有许多事可做。
No way is impossible to courage.
勇敢面前没有通不过的路。
He has to deduce what he can from the few scanty clues available.
他们必须根据现有的不充分的线索进行推理。