艺术家选择了暗淡的色彩来传达画中的忧郁感。

The artist chose ___dull colors to convey a sense of melancholy in the painting.

冬季沉闷的天气常常导致精力不足。

The ___dull weather during the winter months often leads to low energy levels.

房子的外墙涂成了暗淡的黄色，给人一种怀旧的外观。

The exterior of the house is painted a ___dull yellow, which gives it a nostalgic appearance.