| environ. | 海陆运动 地壳的缓慢升降运动 ？？ | bradyseism A long-continued, extremely slow vertical instability of the crust, as in the volcanic district west of Naples, Italy, where the Phlegraean bradyseism has involved up-and-down movements between 6 m below sea level and 6 m above over a period of more than 2.000 years (地壳的长期持续的、极其缓慢的垂直不稳定性，如在那不勒斯、意大利火山区西部，在超过2000年的时间里，Phlegraean海陆运动涉及了海拔6m以上和6m以下的升降运动。) |
