Ectocyst
外囊(棘球蚴)
🗣️ 情景例句
How's your son getting on with his English?
你儿子的英语学得好吗？
On coming home, he switched on the television.
他一到家就打开了电视。
As a matter of fact, he was pretending to be ill.
实际上，他是在装病。