Theca externa
[医] 外膜(卵泡)
🧩 词语组成解析
n. 囊, 膜, 鞘\\n[医] 膜, 鞘
🗣️ 情景例句
Right.
对。
Fill it up with unleaded and check the oil,please.
请加满不含铅的汽油，并检查一下机油。
He knew it would not prove difficult in such a small village.
他知道在这样一个小村庄里抓住小偷并不困难。