1.
Help yourself without ceremony.
请随意吃（不必客气。）
2.
"I'm sorry to have troubled you." "Don't mention it."
"对不起,麻烦你了。" "不必客气。"
3.
I am sorry to have troubled you . -- do not mention it .
对不起，麻烦你了。——不必客气。
4.
If in douBt, don' t hesitate to ask me.
如有疑问，问我就是了，不必客气。
5.
"This food is a Sichuan speciality. Help yourself, please."
这是四川名菜，请大家不必客气。
6.
I'm not a stranger here, why all these ceremonies?
我又不是外人, 何必客气。
7.
It's a pleasure. I hope you get there safely.
不必客气，希望你安全到达。
8.
Don't be too courteous to such an impolite person.
对这样没有礼貌的人不必太客气。
9.
You are welcome to use / to the use of my car any time.
你不必客气可随时用我的汽车.
10.
As we are old friends, it is totally unnecessary to stand on ceremony.
都是老朋友，大可不必如此客气。
11.
When (you are) in need, don't hesitate to ask me for help.
需要时，请不必客气地找我帮忙。
12.
"Come, don't stand on ceremony."
“噢，不用客气了。”
13.
C: You're welcome. Goodbye.
丙：不客气，再见。
14.
It was my pleasure
不用谢(别客气)。
15.
You may dispense with the pleasantries, Commander.
不必客套了，指挥官
16.
There need be no ceremony between us.
我们之间不必客套。
17.
This by no means guarantees gentle treatment by the police.
这绝不保证警察们会客客气气的。
18.
I had been very unfair to him on that occasion.
那次我对他非常不客气。