look black
1．look angry面现怒容
He looked black at his enemy．他怒视敌人。
2．appear threatening；indicate misfortune（形势等）看上去严峻；呈现危机
The future looked black when father got hurt and could not work．父亲受了伤不能去上班，前景很严峻。
As prices dropped lower and lower，things looked black for Henry's company．价格一再下跌，亨利的公司面临了危机。