1. The extreme cold can embrittle metal and make it more prone to breaking.
极端寒冷可以使金属变脆，并增加其容易断裂的风险。

2. The prolonged exposure to sunlight embrittled the plastic, causing it to crack.
长时间暴露在阳光下使塑料变得脆弱，导致其产生了裂缝。