灾难的预兆 meaning in English

a finger on the wall

As we walked to dinner during our last evening in yunnan , an elongated dark cloud loomed across the shangri - la valley - - an omen of the transnational environmental catastrophe or james hilton turning over in his grave ( or both )
当我们在云南的最后一晚前去就餐时，一片细长的乌云向香格里拉峡谷上空压来? ?是跨国环境大灾难的预兆，还是詹姆斯?希尔顿在九泉之下不得安宁，抑或两者都是？