蚊蚊mandy
900 nine hundred 932 nine hundred and thirty two 2000 two thousand 2001 two thousand and one 19世纪上半叶In the first half of the 19th century 19世纪20年代(1820s)eighty twenties
馋猫儿星星
900(几00年) nine hundred 当几=20 即2000年932 (几几几年)nine hundred and thirty two 2000 (几000年)twenty hundred /two thousand 2001 (几几几几年)two thousand and one /twenty hundred and one 19世纪上半叶in the early nineteen century 19世纪20年代1820s in the eighteen twenties
悠游肚肚熊
19世纪20年代:In the 1820s in the twenties of 19th century. 1820s=eighteen twenties 1920: nineteen twenty ninety hundreds and twenty