别客气的英文简写为Help yourself或You're welcome。
双语例句：
1、里面有点心和咖啡，别客气。
There's biscuits and coffee on inside! Help yourself.
2、当中一位男子跟另外一位说：“别客气，请自行取用呀。”
One of the men said to the other， "Please help yourself."
3、男：非常感谢。女：别客气。
Man: Many thanks. Woman ： You're welcome.
