storm cloud

1. N-COUNT Storm clouds are the dark clouds which are seen before a storm. 暴風(fēng)云[usu pl]

2. N-COUNT You can use storm clouds to refer to a sign that something very unpleasant is going to happen. 不祥的預(yù)兆[正式] [usu pl]

Over the past three weeks, the storm clouds have gathered again over the government. 在過去三周里，不祥的陰云再次籠罩了政府。