I doubt it, sir. We'll try, but I can't promise anybody before 3:30.
我没把握,先生。我们会尽早的,但我不敢许诺3:30以前行。
People who work in offices are frequently referred to as white-collar workers' for the simple reason that they usually wear a collar and tie to go to work.
坐办公室的之所以常常被称作“白领工人”,就是因为他们通常是穿着硬领白衬衫,系着领带去上班。