apopnixis

例句：

1. 1.The apopnixis of the disease is that it can be easily treated.
   这种疾病的难治之处在于它容易治疗。
2. 2. The apopnixis of the virus is that it can spread quickly.
   病毒的难治之处在于它传播迅速。
3. 3.The apopnixis of the situation is that we need to find a solution quickly.
   这种情况的难治之处在于我们需要尽快找到解决方案。