n.次生伞形花序，小伞形花序
To get to work, he takes umber 17 bus to a hotel.
为了去上班, 他乘17路公交车到一个宾馆.
A unique umber a ociated with each interrupt.
和每一个中断相关联的唯一数字.
You are umber one.
你是第一流的.
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