重点词汇
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春天
spring; springtime; vernal
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夏天
summer; summertime
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秋天
autumn; fall; autumnal
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冬天
winter; wintertime; wintry
spring, summer, autumn, winter
春天
spring; springtime; vernal
夏天
summer; summertime
秋天
autumn; fall; autumnal
冬天
winter; wintertime; wintry