(figurative)The storm clouds of revolution were gathering.
乌云滚滚,山雨欲来,革命即将爆发。
牛津词典
Over the past three weeks, the storm clouds have gathered again over the government.
在过去 3 周里,政府再次为不祥的阴云所笼罩。
柯林斯高阶英语词典
An storm cloud forms over South Africa's Highveld.
南非高原的天空正在形成来势汹汹的暴风云.
期刊摘选