Felton's serum
[医] 费尔顿氏血清(浓缩抗肺炎球菌马血清)
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
I mean, there seems to be something to celebrate all the year round.
我的意思是，好像一年到头都要忙着庆祝似的。
A penny saved is a penny gained.
省一文是一文。
Dear May,
亲爱的梅，