| environ. | 翻转湖沼学, 循环，特别是在秋天和春天，水层中的水面与底层水下沉混合；由于密度区别上的变化造成温度上的变化。这种循环是非常普通的，无论是冬天还是冰封。 | overturn The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter; limnology |
