他们被随机分为四组，并被置于不同等级的背景噪音环境中，从完全寂静到有50分贝、70分贝和85分贝的噪音。

They were randomly divided into four groups and exposed to various noise levels in the background, from total silence to 50 decibels, 70 decibels, and 85 decibels.

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PHP(其他编程语言提供了同等的处理能力)具有一组函数，可以为此提供帮助。

PHP (other programming languages provide equivalent processing capability) has a set of functions that can help with this.

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INHERIT SELECT PRIVILEGES 子句指定，在超表上保留了SELECT 权限的用户或组都将获准在新表上拥有同等的权限。

The INHERIT SELECT PRIVILEGES clause specifies that any user or group holding the SELECT privilege on a supertable is to be granted an equivalent privilege on new subtables.

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