求解高英第二册第九课《离开奥姆拉斯的人》倒数第3段Yet it is引导的句子的句法分析
Their tears at the bitter injustice dry when they begin to perceive the terrible justice of reality,and to accept it.Yet it is their tears and anger,the trying of their generosity and the acceptance of their helplessness,which are perhaps the true source of the splendor of their lives.这是高英第二册第九课《离开奥姆拉斯的人》倒数第3段的2句话,可是我们老师解释的是Yet后面的it is引导的是个强调句型,我表示难以理解,我觉得it是指前面的the terrible justice of reality,希望各位同学老师帮帮忙