求解析!from 通与from through!急!在线

问题描述:

求解析!from 通与from through!急!在线
书上有句话是we were buried under five feet of snow from December through March.这里的from through是怎么回事儿?和from to有什么区别?

从十二月到一直度过了整个三月, 如果用to只表示从十二月到来年三月,没有表明艰难的穿过、度过三月,through 恰恰表示从内部通过