The weather grew harsh, chilly and unpredictable.天气变得恶劣、寒冷且变化莫测。He makes unpredictable, arbitrary decisions.他做的决定难以预料, 主观武断.He is unpredictable, weeping one moment, laughing the next.他喜怒无常，一会儿哭，一会儿笑。Take waterproof cloth...
He is unpredictable, weeping one moment, laughing the next.他喜怒无常，一会儿哭，一会儿笑。No-one knows where they stand with him; he is utterly unpredictable.谁也不知道他怎样看待他们；他是个完全不可捉摸的人。She was unpredictable, explosive, impulsive and easi...