Haze and mist blended all into gray: gray water, gray sky, gray air, gray hills with a tint if green.

薄雾和霭霾把一切都融合成了一片灰色：灰色的海水，灰色的天空，灰色的空气，和带着一抹淡绿的灰色的山岗。

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The formulations and film performance of fatty acid ester based white melamine baking paint, blue polyurethane paint and gray air dry alkyd enamel are listed.

例举了用脂肪酸酯制备白色氨基烘漆、蓝色聚氨酯漆及浅灰色自干醇酸磁漆的配方及涂料性能。

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Besides the air, the farms would also recycle and purify gray water, which is wastewater from sinks, bathtubs and drinking fountains.

除了空气，昆虫型农场还能回收和净化来自水池、浴缸和饮水机的生活污水。

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They were really gray and there's this heavy feeling in the air,

黑压压的一片，空气中有种厚重的感觉，

I wonder if 实战 - SpeakingMax英语口语达人

The passengers clapped as they took off on a big gray air force plane headed for the capital, Santiago, which has troubles of its own.

CNN: O'Brien: Concepcion, city of chaos

Mr Luff spoke alongside senior officials and service personnel, including Chief of Defence Materiel Bernard Gray and Air Marshal Steve Hillier, deputy chief of defence staff, Ministry of Defence.

BBC: Defence Committee

The morning of my cormorant trip, the weather was gray and gloomy, the air raw and slightly nippy, but this did little to dampen my enthusiasm.

WSJ: Cormorant Fishing in Yunnan Province, China