the benefit or interests of all
公益
it is time our elected officials stood up for the common good.
该是我们选出的公务员们维护公益的时候了。
a point accepted or shared by each of two or more conflicting or differing parties
（冲突矛盾双方或多方承认的）共同立论基础
artists from different cultural backgrounds found common ground.
有着不同文化背景的艺术家们找到了共同基础。
something known by most people
大多数人都知道的事，众所周知之事；常识
(Brit. informal)of the usual or ordinary type
(英，非正式)平常的，普通的，平凡的
Britain's common or garden house sparrow.
英国的普通家雀。
a thing or things held jointly
共同财产；公共财产
the ability to get on with or appeal to ordinary people
平易近人的能力；与普通人相处（或打动普通人）的能力
have a specified amount or degree of shared interests or characteristics
有共同之处（或兴趣、特征）
the two men had little in common.
这两个人没什么共同之处。
in the same way as
与…一样，与…相同
in common with other officers I had to undertake guard duties.
和其他军官一样，我不得不承担警戒任务。
(Brit.)rarely occurring; unusual
(英)不平常的；非同寻常的
Equally with or by all.
一样，同样：与所有的都相同地