In a dirty night, partisans made a breakthrough of the enemy territory without anybody knowing it.

在一个风雨交加的夜晚，游击队员们神不知鬼不觉地突破了敌战区。

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Campbell said she had been given a "few dirty pebbles" in the middle of the night.

VOA: standard.2010.08.09

The lows are low: 20-bucks-a-night affairs with an air conditioner, dirty towels and roaches as roommates.

FORBES: Magazine Article

The future of a technology that converts dirty cheap coal into clean natural gas for transportation fuel was underscored last night by a Chinese investment in Synthesis Energy Systems(SYMX, NASDAQ), a small Houston company that holds a valuable license for this transforming technology.

FORBES: Synthesis Energy Systems Will Turn China's Dirty Coal Into Clean Natural Gas

In her mind, she opened the drawer of his night table, just to be appalled by the number of pill bottles there, the dirty secret of his decline.

NEWYORKER: Soldier��s Joy