迅速发生的 meaning in English

happening quickly

He was stunned with the rapid career of events during the last few hours .
他被最近几个钟头内迅速发生的事情吓呆了。
The hammer is encrusted with calcium carbonate , which can happen quickly
锤子被碳酸钙包覆，是可能迅速发生的。
Content with his quiet , idyllic life , uldyssian is shocked as dark events rapidly unfold around him
满足于自己的舒适田园诗般的生活的他被周围迅速发生的黑暗的事情所震惊