Immune serum
[化] 免疫血清
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
You may well say so.
你可以这么说。
What were you doing at about 4 o'clock yesterday afternoon?
你昨天下午在大约4点钟正在做什么？
Excuse me.Where's the nearest post office, please?
请问。最近的邮局在哪里？