vastKK [væst] /væst/发音形容词1广大的、辽阔的、广阔的We drove for hours across a vast desert without seeing anyone.我们在辽阔的沙漠中开了好几个小时的车,一个人也没遇到。2大量的、庞大的、巨额的The company spends a vast amount of money on advertising each year.这家公司每年在广告上投入大量金钱。3极大的、悬殊的There is a vast difference between reading about it and doing it.读到这件事和亲自去做,两者差别极大。用这个字练口说→