The moon is under a cloud.

月亮被云层遮盖了。

His workmate lost money and he was under a cloud.

他的同事丢了钱，他遭怀疑了。

He had arrived at the hotel St. Gregory under a cloud.

他是含垢忍辱到圣格雷戈里饭店来的。

I recalled the fate of Marco Polo who died under a cloud of contempt.

我想到了马可波罗的命运，他是在一团憎恶之云的笼罩中弃世的。

It's unfair that the son will be under a cloud because his father is a thief.

因为父亲是小偷，儿子就理应受到怀疑，这是不公平的。