小东菇1
道理英语：principle。
principle
英 ['prɪnsəpl] 美 ['prɪnsəpl]
n.原理；原则；主义；信念。
We adhere to the principle that everyone should be treated fairly.
我们坚持人人都应该被平等对待这一原则。
It is easier to fight for one's principle than to live up to them.
为自己的主义斗争，要比他们施诸实践更容易。
语法：
principle或principles都有表示“道德，情操”的意思。
He has both ability and principle(s).
他既有能力又有情操。
in principle指“原则上，大体上”。
I accept the suggestion in principle.
大体上来说，我接受这些建议。
on principle指“根据原则”或“按照”。
I accept the suggestion on principle.
根据原则，我接受这些建议。
条野太浪
道理的英语是truth。
例句：
1、他的说法似乎有点道理。
There appears to be an element of truth in his story.
2、其中含有很深刻的道理。
There's more than a grain of truth in that.
3、尽管有混用的比喻，这个判断还是有些道理的。
Despite the mixed metaphor, there is some truth in this judgement.
4、我们也明白了那句老话的道理：仁爱始于家庭。
We also realize the truth of that old saying: Charity begins at home
5、据我所知，他的话可能有一点儿道理。
For all I know, there may be a kernel of truth in what he says.
