tā de huà fā zì fèi fǔ chéng kěn gǎn rén
他的话发自肺腑，诚恳感人。
What he said was from the bottom of his heart, sincere and touching.
tā tǎn shuài ér chéng kěn
他坦率而诚恳。
He is so simple, so sincere.
tā shì gè fēi cháng chéng kěn de nián qīng rén
他是个非常诚恳的年轻人。
He was a rather earnest-looking young man.
tài du chéng kěn
态度诚恳
be sincere in what one does and says
chéng kěn de jiē shòu yì jiàn
诚恳地接受意见
listen to other people's criticisms with an open mind
tǎn bái ér yòu chéng kěn de zì wǒ pī píng
坦白而又诚恳的自我批评
frank and honest self-criticism
tā shuō huà hěn chéng kěn
他说话很诚恳。
He spoke very honestly and sincerely.
wéi rén chéng kěn
为人诚恳
be sincere to others
dài rén chéng kěn
待人诚恳
treat others with earnestness
chéng kěn de zī tài
诚恳的姿态
a sincere attitude