run riot

基本解释

The idea is to give scientists—particularly young ones—the chance to let their imaginations run riot without having to worry too much about failure.
這個計劃是想給科學家們，尤其是年輕的科學家們一個機會，讓他們展開充分的想象而無須擔心失敗。
The exuberance of nature run riot is a welcome antidote to many of the views on the road from Shanghai, of nature subjugated to economic development.
從上海過來時，一路上有很多綠樹纏繞的茂盛景象，這在經濟發展正一步步吞噬自然景觀的今天實在難得。
If a man permits his life to run riot and only the animal side of his nature is allowed to express itself, he is repressing his highest and best, and the qualities not used atrophy and die.
如果一個人任由他的生命肆無忌憚，衹是容許其天性中獸性的一麪去自在表現，那麽，他就是在壓抑自己的崇高和卓越，於是，那些優秀品質就會因不用而萎縮、衰亡。
blog.sina.com.cn

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If people run riot, they behave in a way that is not controlled, running in all directions or being noisy or violent.
If your imagination runs riot, you have a lot of strange, exciting, or surprising thoughts.