carefreeyu
英文中三位数一个逗号,从右往左第一个逗号念thousand,第二个念million十万,第三个念billion十亿。一个数的最高位离哪个逗号近就念哪个,比如1,000,念one thousand。100,000念0.1million。此题为90,000在十万和千(两个逗号)之间,念ninety thousand比较好
海螺拍客
thirty thousandfourty thousandfifty thousandsixty thousandseventy thousandninety thousandone hundred thousandtwo hundred thousandthree hundred thousandfour hundred thousand
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