“无色的”用英语怎么说？

像水一样无色的液体a colourless liquid like water将无色的小片状物过滤出来,用冷的甲醇洗涤.The colorless platelets were filtered washed with cold methanol.胂是一种无色的有毒的气体需要小心地对待.Arsine is a colorless, poisonous gas that requires careful handling....