剧烈活动 meaning in English

aggravating activities

Great disturbances at the heart of the earth caused mountains and volcanoes to rise above the water .
由于地心的剧烈活动，使山脉和火山露出水面。
The volcano erupted after years of dormancy
那座火山在沉睡多年后剧烈活动起来。
There the season of the greatest activity is between december & march
12月和3月是此类剧烈活动频发的时节。
A good goal is like a strenuous exercise - it makes you stretch
一个好的目标就像一次剧烈活动，它能使你得到伸展。
The volcano in a philippine island erupted after years of dormancy
那座菲律宾岛上的火山在沉睡多年后剧烈活动起来

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