It's a dark and moonless night.

这是一个黑暗无月的夜晚。

It was a cold, moonless night.

这是个寒冷，无月光的夜晚。

It was a dark, moonless night.

那是一个漆黑无月的夜。

That was a dark, moonless night.

那是一个黑暗的，无月光的夜晚。

It was a silent, moonless night.

那是个寂静、没有月亮的夜晚。