At night, all cats are grey.猫在夜晚皆灰色(丑妍暗中难分辨)。He was a tall, lanky man with iron-grey hair.他是个瘦高个子，一头铁灰色头发。He dresses in sober grey suits.他总是穿素净的灰西服。The great grey shape of a tank rolled out of the village...一个坦克的巨大灰影从村子里...
I undid the bottom two buttons of my yellow and grey shirt.我解开了自己黄灰相间的衬衫上最下面的两个纽扣。He was a tall, thin man with grey hair.他是个瘦高个，头发灰白。At one point last week shares in the grey market touched 230p.上周，灰市上的股票价格一度高达230便士。...
The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.The air guards the catalytic converter from overload and possible resulting damage.空气防止了催化式排气净化器的过载及可能产生的损坏.It is known as catal...