Water can have three states--solid, liquid, or gas--depending upon temperature. If you add pressure, however, synergistic effects are produced, and water can be changed into at least 20 states, such as plasma. To take another familiar example: under high pressure, graphite, a commonly occurring form of carbon, turns into diamond.
以水為例，水因溫度的不同，有液態、氣態、固態 3 種不同型態，但如果加上壓力，會產生相乘效果，變成至少 20 種型態，例如現在很時髦的「電漿」就是其中一種。