Increases in the number of sucks were used as an indicator of the infant's attention to or preference for a given visual display.

吮吸次数的增加表明婴儿注意到或是喜爱眼前出现的物品。

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Using the storage type indicator, you can ensure that certain materials are only removed from certain storage types or placed into certain storage types in the order of preference you have defined.

使用存储类型标识，你可以确保确定的物料只能从确认的存储类型存放或取走。

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