Hydrogen and air mixtures, within the flammable range, can explode and may burn with a pale blue, almost invisible flame.
在可燃范围内的氢和空气的混合物可能爆炸，也可能燃烧，火焰是淡蓝色，几乎看不见。
A range of sophisticated nuance, neutral coloured, vegetal and metallic greys from pale aluminium to tin bronze changing through time with oxidized and rusty shadows.
一系列微妙的色彩，中性色，从灰铝色到锡青铜色随时间氧化的锈迹阴影中提取的植物灰和银灰色。
Young white table wines range in color from pale straw, sometimes with greenish tints, to a rich amber.
年轻的白餐酒的颜色范围是从浅禾杆黄到深琥珀色。
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