1.
To those who are sincere with me, I am sincere，to those who are not sincere with me, I am also sincere.
对我真诚的，我也真诚，对我不真诚的，我仍然真诚。
2.
In all honesty/frankness/sincerity,ie speaking with the greatest honesty,etc
最诚实地/坦白地/真诚地
3.
The truest politeness comes from sincerity
真正的殷勤出于真诚
4.
Services rendered by loyalty to professional pious, sincere collaboration to work with enthusiasm, "sincerity" and then to be.
待客以忠诚，专业以虔诚，协作以真诚，工作以热诚，“诚”然后成。
5.
Wholeheartedly welcome faithful cooperation from men of insight of all circles.
谒诚欢迎各界有识之士坦诚相见，真诚合作。
6.
Become genuinely interested in other people.
真诚的对别人发生兴趣。
7.
the warmth and sincerity of his welcome
他热情而真诚的欢迎.
8.
surface politeness
表面[不真诚]的殷勤
9.
challenge the sincerity or truthfulness of.
怀疑……的真诚或坦率。
10.
His honesty is without/beyond question.
他的真诚不容置疑。
11.
receive a hearty cheer from the audience
受到观众真诚的欢呼
12.
I gave him my sincere thanks.
我真诚地向他道谢。
13.
behave cold and formally.
非常冷淡、不真诚地行事。
14.
Believe me, I am truly grateful for...
我确实真诚地感谢你……
15.
Sincerest congratulations on your birthday.
真诚地祝你生日快乐。
16.
He sincerely converted to Judaism
他真诚地改信了犹太教。
17.
a guileless, disarming look.
真诚的化解敌意的一瞥。
18.
I sincerely hope that this first transaction
我真诚地希望这次交易