We don't need to stay long; we'll just show the flag at dinner and then get home early.我们不必待很久；我们只要在宴会上露露面，便可早些回家。I suppose we ought to show the flag.我觉得我们应该露面。We won't stay long; we'll just show the flag at dinner and then leave early.我们不会待多久的;我们只打算在宴会上露露面，然后就走。