Leptin
n. 瘦蛋白
🗣️ 情景例句
When do you need the volunteers,
你们什么时候需要义工
Hello, is this the home of Mr. Chen?
喂，是陈先生的家吗？
It later became apparent that rabbits were developing a degree of resistance to this disease,
后来，明显看出，兔子对这种疾病已产生了一定程度的免疫力，