Hydrogen is a corlourless, odourless gas.氢气是一种无色 、 无味的气体.Pure air is colourless and odourless.纯空气是无色无臭的.Our new product will keep your bathroom clean and odourless.我厂新产品能保持您的浴室洁净无味....
Water is not only colourless, but odourless as well.水不仅没有颜色，也没有气味。The gases are odourless.这些气体没有气味。...a completely odourless, colourless, transparent liquid...完全无味、无色、透明的液体Hydrogen is a corlourless, odourless gas.氢气是一种无色...