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社会大学i
one two three four five six seven eight nine 这九个数字一定用牢记，用作个位数。整十数更要记好，twenty thirty forty 写在前，中间用一个连接符号，就是几十几。如：twenty twenty-one twenty-two......twenty-ninethirty thirty- one thirty-twp......thirty-nine forty
wangyuting3573
Peter and Lucy were born in the same year
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