Operculums
n. [昆] 盖；鳃盖
🗣️ 情景例句
There are thirty-three thousand three hundred and thirty-three feathers on that bird's throat.
那只画眉鸟的喉咙上有三万三千三百三十片羽毛。
It's essential.
这是必要的。
I don't like to be late. We begin classes at 8:00.
我不喜欢迟到。我们八点上课。