Mastoiditis externa
[医] 外乳突炎, 乳突骨膜炎
🧩 词语组成解析
n. 乳突炎\\n[医] 乳突炎
🗣️ 情景例句
Who is it?
谁呀
Kill the goose that lays the golden eggs.
杀鸡取金蛋；只图眼前需要，断绝将来财源。
Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。