Bppv
[医][=benign paroxysmal positional vertigo]良性阵发性体位性眩晕
🗣️ 情景例句
A surprise?
一个惊喜吗？
Proverbs are the wisdom of the ages.
谚语是时代的智慧。
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，