形容詞 tasteless:

1. lacking flavor
2. lacking aesthetic or social taste

1. It was tasteless of you to say that.
   你說那種話真是庸俗。
2. He thinks the vegetable is a bit tasteless.
   他覺得蔬菜沒有什么滋味。
3. A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen(approximately78 percent) and oxygen(approximately21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases.
   空氣一種無色、無嗅、無味的氣體混合物，主要由氮氣(約占78％)和氧氣(約占21％)組成，還有少量的氬、二氧化碳、氫、氖、氦及其它氣體
4. Gelatin is a clear tasteless substance.
   明膠是一種透明無味的物質(zhì)。