She is going to play the piano to a big audience this evening.今晚她要给许多观众演奏钢琴。Such a well-known politician should draw a big audience.这样一位知名政治家应该能吸引大批听众。It won't do to trust to the inspiration of the moment when speaking to such a big audience.对这么多听众演讲，事先不准备仅靠一时的灵感是不行的。