Serum disease
[医] 血清病
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
Oh, beautiful as ever, Lillian.
噢 ，还像以前一样漂亮， Lillian。
It's the year of 1999.
今年是1999年。
How did the bees know exactly in which diection to fly?
蜜蜂是怎样确切地知道朝哪个方向飞呢？