colorless

形容词 colorless:

1. lacking in variety and interest
   同义词：colourless
2. weak in color; not colorful
   同义词：colourless

1. Ammonia is a colorless gas with strong smell.
   氨是无色并有强烈气味的气体。
2. Glycerin is a thick sweet colorless liquid.
   甘油是一种很甜且无色的浓稠液体。
3. He has become colorless because of anger.
   他因为生气，脸色苍白。
4. Water is colorless.
   水是无色的。
5. The old man's life became dull and colorless.
   老人的生活变得呆板无趣。