详细解释:由...产生
【法】 由于, 由...引起
例句：
A neurotic disorder characterized by chronic fatigue and weakness, loss of memory, and generalized aches and pains. It was formerly thought to result from exhaustion of the nervous system.神经衰弱一种神经系统紊乱，表现为长期疲劳乏力、失去记忆，带中度疼痛。以前被认为是由于神经系统衰竭引起的