autumn
美 ['ɔtəm] 
英 ['ɔːtəm] 
- n.秋季;秋天
 - 网络成熟期;渐衰期
 
复数:autumns  
autumn
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1.  | 秋天;秋季the season of the year between summer and winter, when leaves change colour and the weather becomes colder  | 
in the autumn of 2010 在 2010 年秋季  | |
in early/late autumn 初秋;晚秋  | |
the autumn term(= for example at a school or college in Britain) 秋季学期  | |
autumn colours/leaves 秋色;秋叶  | |
It's been a very mild autumn this year. 今年秋天一直很暖和。  |