喺實驗室 你將隻蛤放落pH值 唔係 8.1 呢個係一般海水pH值 而係 7.5 嘅液體裡面 隻蛤會喺三日內溶解
In the lab, you put a clam with a pH value of not 8.1, which is the pH of normal seawater, but a liquid of 7.5, and the clam will dissolve in three days