What is revolving letter of credit?And it have which excellence?

What is revolving letter of credit?And it have which excellence? what time is it on the kuai dan gao xie xie le We are what le?Why I will become like this,do not know who is wrong! What is Li Le doing?She's_____a picture画横格的怎么写? Life is like a revolving door. When it close ,it also opens(中文翻译） revolving credit facility是什么意思 revolving什么意思 “swinging around revolving是什么意思? As the saying goes,life is like a revolving door.When it closes ,it also opens.怎么翻译 Le Le Le Le 英语翻译1.Account of using 1.Use with a 5# cell 2.Change cells by revolving to OPEN3.Start using by revolving to ON4.Shut electric off and stop opeating by revolving t o OFF2.Brief account of functionThis small and delicate prodnot is easy revolving documentary letter of credit Revolving Letter of Credit是? 循环债务(revolving debt)是什么? because now I konw what it's like to le