odorless

基本解释

Methane is a colorless, odorless and flammable substance which forms a major component in natural gas.
甲烷是一種無色，無味，易燃物質，是天然氣的重要組成部分。
Colorless, odorless carbon monoxide is a deadly poison that kills nearly 500 unsuspecting people a year.
無色、無味的一氧化碳是一種致命的毒氣，每年約有500名無辜群衆死於此。
Hutchinson is annoyed, but says they're planning on gassing the brothers out floor by floor; they're using a colorless, odorless gas.
漢金森覺得他煩人，但還是告訴了他，警方將一層一層地用氣躰把他們倆兄弟燻出來，警方使用的是無色無味的氣躰。

Well many believe that vodka is a colorless, tasteless, odorless spirit (except for the ethereal qualities), but in reality vodka DOES have flavor!
FORBES: How To Taste Spirits
To compensate for this, egg producers in the US commonly used to spray eggs with a thin layer of odorless, colorless mineral oil.
FORBES: Natural Protection
Invisible and, often odorless, green leaf volatiles emitted from vegetation act as a defense mechanism, communicating to other foliage that danger is near.
ENGADGET: Chemical sensors could detect plants' cries for help, reduce need for pesticides