Moor-ditch:

an ill-smelling ditch outside the walls ofLondon,which drained the marshes of Moorfields. Itsfoul vapour was believed to disturb the brain andcause melancholy in the mind.摩尔沟，过去伦敦城外的臭排水沟，据信其臭气能使人头脑烦乱并产生忧郁情绪。
△1H.IV.1.2.87 (77):“What sayest thou to a hare,or the mel-ancholy of Moor-ditch?”或者把你的愁闷比作 一只野兔或者摩尔沟的臭味，你觉得如何？