Operculums
n. [昆] 盖；鳃盖
🗣️ 情景例句
I wish you'd stop nagging me.
我希望你别老这么烦我。
Everyone wins.
两全其美。
Once we get down to the oil, it usually flows to the surface because great pressure,
一旦到达油层，石油就会由于地下巨大的压力流到地面上来，