Pitch-black means completely black, with no light and no colour you can pick out — as black as pitch, the thick, sticky tar people once spread on roofs and ships. You can say a pitch-black night, a pitch-black room, or pitch-black hair. It is a strong everyday word, a little vivid, the kind you find in stories as well as in talk.

Pitch-black means completely blackpitch-black是指完全黑, with no light and no colour you can pick out沒有光、也分辨不出任何顏色 — as black as pitch黑得像pitch（瀝青）一樣, the thick, sticky tar people once spread on roofs and ships也就是以前人們塗在屋頂和船上那種黏稠的黑色瀝青。You can say a pitch-black night你可以說a pitch-black night（漆黑的夜晚）, a pitch-black rooma pitch-black room（漆黑的房間）, or pitch-black hair或pitch-black hair（烏黑的頭髮）。It is a strong everyday word這是個很生動的日常用字, a little vivid帶點畫面感, the kind you find in stories as well as in talk故事和口語裡都會出現。

People also say pitch-dark for the same idea when they mean darkness rather than colour. Though actually, pitch-black can describe a colour (hair, a cat, a wall), while pitch-dark is almost always about light.

People also say pitch-dark for the same idea人們也會用pitch-dark表達同樣的意思 when they mean darkness rather than colour但講的是黑暗而不是顏色。Though actually不過其實, pitch-black can describe a colourpitch-black可以形容顏色 (hair, a cat, a wall頭髮、貓、牆壁), while pitch-dark is almost always about light而pitch-dark幾乎都是指光線。

Pitch here is the tar, not throwing a ball, and not the high or low of a sound.

Pitch here is the tar這裡的pitch指的是瀝青, not throwing a ball不是丟球的意思, and not the high or low of a sound也不是聲音的高低。