1. This will be particularly true since energy pinch will make it difficult to continue agriculture in the high-energy American fashion that makes it possible to combine few farmers with high yields.
this will be particularly true是句子主干,this是主语,true后面的是主语从句;
从句又是个主语从句:that makes it possible to combine few farmers with high yields
这个主语却是个原因状语从句:since energy pinch will make it difficult to continue agriculture in the high-energy American fashion
有点复杂,说不上来了,硬是翻译:(请指教)