cloud作“云状物、一大群”讲是可数。
cloudn.云；云朵；云状物(如尘雾、烟雾、一群飞行的昆虫)；阴影
Her father\'s illness cast a cloud over her wedding day.
她父亲的病给她的结婚喜庆日蒙上了一层阴影。
His last years were clouded by financial worries.
由于经济窘困，他的晚年生活过得闷闷不乐。
He still has a cloud of suspicion hanging over him.
大家仍然在怀疑他。
