Helf
[医][=human embryonic lung fibroblast]人胚肺成纤维细胞
🗣️ 情景例句
When you have a business meeting in the United States, come to the appointment on time.
当你在美国有商务会晤时，一定要按时赴约。
I remember George's father owns a ship.
我记得乔治的父亲有一艘船。
This boy has no job.
这个男孩没有工作。