Smith's book serves as an excellent introduction to a vast subject, and will suggest plenty of further lines of inquiry.
史密斯的书是对一个广阔主题的极好介绍，并将提出许多进一步的研究方向。
To provide the excellent products and service, Welcome to inquiry.
为客户提供最优良的产品和服务；欢迎垂询。
To provide the excellent products and service, Welcome to inquiry.
为客户提供最优良的产品和服务；欢迎垂询。
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