colourless glaze

例句：

1. 1. The paint on the wallsis colourless.
   墙上的油漆是无色的。
2. 2.The sky was colourless and seemed togo on forever.
   天空是无色的，似乎没有尽头。
3. 3. The new dress is colourless, but it looks very nice.
   这件衣服是无色的，但看起来很漂亮。