房间很暗
Fángjiān hěn àn
The room is dark.
天色慢慢暗了
Tiān sè mànman àn le
The sky slowly got dark.
暗中观察
Ànzhōng guānchá
Observe secretly.
他们暗地里谈话
Tāmen àndì lǐ tánhuà
They talk privately/secretly.
