As far as possible, the teacher should expose the student to real life situations.
教师应该尽可能使学生接触现实生活的情景。
I'll pick up the tab.
我来付帐。
living in a world in which undeclared aggression, war, hypocrisy, chicanery, anarchy and impending immolation are part of our daily lives, we all want a code to live by.