率真的英文：
forthright and sincere

参考例句：

An unashamed expression of deeply-felt emotion
内心深情的率真表露

The fundamental relationship that Norwegians have with nature makes them open and uninhibited with respect to nudity
挪威人与自然的亲密关系使挪威人以一种开放和率真的态度来看待裸体艺术。

"nor at all like the poetr y women generally write, I thought them condensed and terse, vigorous and genuine."
它们毫无通常所谓的脂粉气息,而是精炼、简洁、刚健、率真。

forthright是什么意思：
adj. 直率的；直接的

He chuckled at her forthrightness.
她的直率让他窃笑。

My talks with President Musharraf were constructive and forthright.
我和穆沙拉夫总统之间的会谈是有建设性的和直率的。

They are forthright and relatively more concerned about important issues.
他们比较豪爽，比较关心大事。

Why should they not be forthright about their role and its limitations from the outset?
那么他们为什么不一开始就坦白地说明他们真实的角色与所受的限制呢?

He is a friend who will give forthright admonition and a teacher who is strict with his students.
他是一位诤友严师。

sincere是什么意思：
adj. 真诚的，衷心的；诚恳的；诚实的，忠实的；正直的

She‘s a sincere friend.
她是位忠实的朋友。

His sincereness moved me.
他的真诚打动了我。

Misfortune tests the sincerity of friends
患难见真情.

Misfortunes test the sincerity of friends
患难见友情

Misfortune tests the sincerity of friends.
患难见真情。