分析器产生器的作用是接收一门语言的文法并产生代码以分析该语言。
Parser generators take the grammar of a language and generate code to parse it.
不。一旦你注册并且参加你的第一门考试，微软将自动接收到一条记录。
A. No. Once you register and take your first exam, Microsoft will automatically receive a record.
负责为客人行李存储需求提供服务，接收，标注和领取行李。在入住和退房高峰期时协助门僮和应接服务员的工作。
Provide for guest's luggage storage needs by accepting, tagging and retrieving checked luggage. Assist door and bell staff during the check-in and check-out peak periods.
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