change in nature of risk

例句：

1. 1. The weather has changed dramatically since yesterday.
   自昨天以来，天气发生了巨大的变化。
2. 2. She decided to change her hairstyle for the party.
   她决定为派对换发型。
3. 3.The company is changing its approach to marketing.
   公司正在改变其市场营销的方法。