causal clause

例句：

1. 1.The cause of the fire was due to a faulty wiring.
   火灾的原因是电线故障。
2. 2.The effects of climate change are already being felt around the world.
   气候变化的影响正在世界各地显现。
3. 3.The causal relationship between the two variables is significant.
   这两个变量之间的因果关系是显著的。