In 1847 the scottish physician sir james young simpson first used the sweet-smelling colorless non-flammable liquid as an anesthetic .

在1847年，苏格兰的医生jamesyoungsimpson第一个使用氯仿-无色，甜味，不可燃的液体-作为麻醉剂。

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 .

2010年8月的第一周，当莫斯科市民在一片厚厚的烟尘之下咳嗽不止时，一种无色无味的气体的大气浓度已经到达了危险的水平。

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 .

例如，如果我们希望更少的无色无味二氧化碳从燃煤发电厂和交通工具排气管中如波浪般飘入空中，那么税收将使人们消减这种不受欢迎的行动。