Alloantiserum
同种抗血清
🗣️ 情景例句
I'll have to work for years to pay off my college loan.
我得工作好几年才能还清助学贷款。
What does the test marketing show?
试销说明了什么？
She stands on dry land and is visited by thousands of people each year.
它停在陆地上，每年接待成千上万的参观者。