诱发因素：癫痫发作多系突然发生，无明显诱因。
Predisposing factors: sudden onset of epileptic seizures and more lines, no obvious incentive.
也许吧，但现在很明显出现了其他的诱因。
Maybe, but there are clearly other types of incentives already available.
梦的遗忘很明显是一个复杂现象，斯顿培尔认为其诱因并非单一，而是多重的。
This forgetting is evidently a complex phenomenon; for Strumpell attributes it not to a single cause, but to quite a number of causes.
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