Heiman's serum agar
[医] 海曼氏血清琼脂
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
n. 琼脂, 石花菜\\n[化] 琼脂
🗣️ 情景例句
Hi, honey.
嗨，亲爱的。
The following answer is subject to official confirmation.
以下的答案必须再经过正式确认才有效。
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。