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1·The female birds have the same pattern as the males, but they are a little duller in color．

雌性鸟类与雄性鸟类有相同的图案，但是雌性鸟类的颜色更暗淡一点。

2·A phrenologist and a mesmerizer came—and went again and left the village duller and drearier than ever.

一位骨相学家和一位催眠师来了——又走了，这个镇子比以往任何时候都更加沉闷和乏味。

3·If insects paid attention to such advertisements, they might be prompted to lay their eggs on a duller, and presumably less resistant host.

如果昆虫注意到这样的广告，这可能会促使它们将卵产在一个更迟钝、据推测更不会抵抗的寄主上。

4·And how much duller that would be.

而这样的比赛又该有多么的无聊？

5·The reality was much duller though.

然而现实却更枯燥。

6·This week's class was duller than last.

这周的课比上周的更加枯燥无味。

7·The world is a duller place without you.

失去了你，世界也变得黯淡无光了。

8·Classes are much duller when you are absent.

你不在的时候上课变得更无聊了。

9·This week's class was duller than last (week's).

这周的课比上周的更加枯燥无味。

10·Because smoking causes the skin to become duller.

吸烟使得皮肤失去光泽，变得黯淡无光。