1. Most of the butterflies perish in the first frosts of autumn. 大多数蝴蝶在秋季初霜来临时死亡。
2. Freezing causes frosts, which kill crops. 冰冻会导致霜冻,冻死庄稼。
3. A bad bout of cold weather, a long spell of frosts could ruin a farmer's entire crop. 一场恶劣的寒冷天气和长时间的霜冻都可能会毁掉一个农民的全部收成。
4. These damaging frosts wouldn't happen if the wetlands were still in existence, just a tiny temperature difference can have major consequences. 如果湿地还存在的话,就不会发生这些破坏性的霜冻,正如仅一点微小的温差就会产生重大的后果一样。