to do business in a sincere way

He promised faithfully to do so.

他诚恳地答应如此去做。

try earnestly or persistently to persuade(sb)

诚恳地或持续地催促（某人）

'I won't, I promise you, 'said Phyl earnestly and humbly.

“我不会，我答应你，”菲儿诚恳地、虚心地说。

I had a sincere desire to help her, so I told her with simplicity and sincerity.

我真诚地想帮助她，所以坦率、诚恳地告诉了她。

The other as politely and more earnestly negatived.

后者却更加客气，更加诚恳地推辞了。

Let's talk heart-to-heart about heart problem.

让我们诚恳地讨论有关心脏问题。

"No, I'm not laughing at you," Chueh-hui answered sincerely.

“不，二哥，我不笑你，”觉慧诚恳地说。

He offered a sincere apology for his behaviour.

他主动对自己的行为诚恳地道了歉。

"That's really something," he said earnestly, respect in his eyes.

“真不简单，”徐华北尊重地望着她，诚恳地说。

"Don't worry about them, George," he continued genially and confidentially.

“不要担心他们，乔治，”他诚恳地、机密地说下去。

He said earnestly, "Don't worry, Hedi Village is a good place. The residents are very friendly;

他诚恳地说：“你别担心，河底村是个好地方。

We sincerely asked him the situation, but he kept silent about what happened.

我们诚恳地请他将情形告诉我们，但他沉默不语。

I conjure you most earnestly to reconsider your position.

我最诚恳地请求你重新考虑一下你的立场.

I earnestly beg you to reconsider your decision.

我诚恳地请求你把你的决定再重新考虑一下.

"But consider!"I said earnestly."Count the cost"

我诚恳地说道：“可是你也考虑考虑利害得失吧！

He is truly sorry for his past, and he has undertaken to give up motor-cars entirely and for ever.

他诚恳地忏悔过去，并保证永远不玩汽车。

She gave him a guileless look,but he knew he could not really trust her.

她朝他诚恳地看了一眼，但是他知道他不能真正地相信她。

plead or ask for earnestly.

恳求或者诚挚地请求。