Saccus vitellinus
[医] 卵黄囊
🧩 词语组成解析
囊
🗣️ 情景例句
Is this machine washable?
这能机洗吗？
His health has been lousy.
他的健康状况近来很糟。
However, it was his turn to be surprised,
没料到这回该轮到他自己吃惊了。