1 one, 2 two, 3 three, 4 four, 5 five, 6 six, 7 seven, 8 eight, 9 nine, 10 ten, 11 eleven, 12 twelve,
13 thirteen, 14 fourteen, 15 fifteen,16 sixteen, 17 seventeen, 18 eighteen, 19 nineteen,
20 twenty, 30 thirty, 十位数在十位正位数字后面加上个位,比如31:thirty-one。但是一定要在十位和个位之间加上连词符呀
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