启发思考,one two three four five six seven eight nine ten,eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty,twenty thirty forty fifty sixty seventy eighty ninety,11 12 13 14 15 16 17 18 19 20,20 30 40 50 60 70 80 90,1 2 3 4 5 6 7 8 9 10,twenty-one thirty-two forty-three fifty-five sixty-five seventy-six eighty-seven ninety-eight,21 32 43 55 65 76 87 98,thousand,hundred,千,百,221 707 454 999,two hundred and twenty-one,seven hundred and seven,four hundred and fifty-four,
