colorless

• adj.无色的；苍白的

1. lacking in variety and interest;

   "a colorless and unimaginative person"
   "a colorless description of the parade"
   

2. weak in color; not colorful

1. Pyridine is a colorless chemical liquid.
   吡啶是一种无色的化学液体。
2. Hundreds of years later,a comparatively colorless glass was made in Venice.
   几百年后，威尼斯制出了一种相对无色的玻璃。