As a thought exercise, co-evolution has been around for less than a decade, or as much as 30 years, depending on who you ask.

作为一种思潮，联合进化理论已经出现了至少十年，或者将近30年——这基于你向谁提出这个问题。

youdao

It is suggested that both exhaustion swimming and treadmill running can be used as the method of replicating exercise-induced stress ulcer. But the exhaustion swimming is thought of as a better one.

二者均可作为复制运动应激性溃疡模型的方法，但力竭性游泳运动较跑台跑运动更易成功复制运动应激性溃疡模型。

youdao

As far as I can see this is not intended in any sense as a rather sick academic exercise in stretching the bounds of what could be thought.

BBC: Why was the US military teaching 'total war' on Islam?

Professor West said many smokers thought the symptoms of COPD - such as a smokers' cough or becoming breathless during exercise - were normal.

BBC: NEWS | Health | Much lung disease 'undiagnosed'