派生词是词根cours(去e)+词缀ing，中文意思是n. 追赶奔驰携带猎犬狩猎

例如

He found that rats that exercise on a treadmill have raised levels of brain-derived neurotrophic factor coursing through their brains.

他发现，在跑步机上锻炼的老鼠，其大脑中流过的脑源性神经营养因子水平有所提高。