对于每个项类型，存在一个单独的项句柄类，用于表示对该类型的项的引用；项句柄由项类型和项id组成。

For each item type there is a separate item handle class used to represent references to items of that type; item handles consist of item type and item id.

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无论市场状况如何，搜寻便宜货都会让人上瘾，讨价还价是一项低风险、高价值的接触类运动。

Bargain-hunting can be addictive regardless of the state of the markets, and haggling is a low-risk, high-value contact sport.

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一项研究发现，教育类电视节目会额外给孩子们上一课，影响他们的行为。

A study has found that educational TV shows come with an added lesson that influences the child's behavior.

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