Another common warning sign is the migraine aura, which can take the form of transient visual changes, tingling, or even trouble speaking.

另一个常见的预警信号是偏兆，它可是短暂的视觉变化、刺感，甚至言语困难。

Horses also respond to commands, so kids who have trouble with verbal communication can learn with immediate feedback.

马也会对命令做出反应，所那些言语交流有困难的孩子可通过即时反馈学习。

The problem with alcohol is that it also has other negative side effects, like hangover, movement difficulties, speaking and thinking problems, etc.

问题是酒精会带不良副作用，比如宿醉、行动困难、言语和思考混乱等。

Perhaps the quickest way to understand the elements of what a novelist is doing is not to read, but to write; to make your own experiment with the dangers and difficulties of words.

也许理解小说家所做的事情的最快方法不是阅读，而是写作；自己尝试一下言语的危险和困难。