robads组成的是什么单词

组成的单词是boards，例如：

1.Fewer workers are needed to solder circuit boards.焊接电路板需要的工人更少了。

2.Wednesday, residents of Rjukan received their very first ray of winter sunshine: A row of reflective boards on a nearby mountainside were put to received ．星期三,Rjukan的居民得到了他们的第一缕冬日阳光：附近山腰上的一排反光板被设置好了。

3.She nailed the two boards together.她把两块木板钉在了一起。