Ven as muscovites choked under a blanket of thick smoke in the first week of august 2010 , concentrations of a colorless , odorless gas spiked to dangerous levels .
A pleasant-smelling , colorless and highly flammable liquid , ether can be vaporized into a gas that numbs pain but leaves patients conscious .
芳香的气味，无色和高可燃性的液体并可蒸发成气体用来麻木疼痛并使病人保持清醒。
Bret allen langford , 39 , allegedly asked the owner of a jewelry store to show him a carat colorless diamond in april 2005 .
据称，39岁的布列特艾伦朗格弗德于2005年4月要求一珠宝店的老板拿出一颗2克拉的无色钻石给他看。
For example , if we want less odorless , colorless carbon dioxide billowing into the air from coal-fired power plants and vehicle tailpipes , then a tax should cause people to cut down on this undesirable activity .
