Slow of understanding or action; blunt; stupid.

笨的；迟钝的；愚蠢的。

Without feeling or sensibility.

麻木的；无感觉的。

Not bright or clear to the eye.

不醒目的；模糊的。

Not brisk or active.

不轻快的；不活泼的。

Wearisome.

沉闷的。

Cloudy, as weather.

阴霾的(如天气)。

Not bright or vivid.

无光彩的；不鲜明的。

To take away the sharpness of.

使不锐。

To make stupid or heavy.

使愚蠢；使笨重。

To tarnish.

使晦暗。

To become stupid.

变愚蠢。

To become dull or blunt.

变麻木；变钝。

To lose brightness.

失光彩。