There is extensive online help that details the contents of a validation document and how to author your own validation rules.

大量的在线帮助内容详细说明了验证文档的内容以及如何编写自己的验证规则。

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This extensive—but easy to read! —chart will help you navigate the world of smartphone features and specifications.

下面是一张内容巨广泛但易于阅读的对照图表，帮助你在智能手机功能和规格的世界里清楚的漫游。

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Another explanation offered is that the temporary deposit of water, chilled to form extensive sheets of ice, might help to reflect and focus the winds, making it easier for the rocks to move.

另外一个解释是，暂时沉积的水会结成大面积的薄冰，有助于风力的反射和集中，更容易推动石头前进。

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It is no accident that both Mr Labastida and Mr Fox are promising extensive help, such as credit schemes, for small and medium-sized businesses.

ECONOMIST: The beginning of the end of the longest-ruling party | The

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The precision of the Brussels heist suggests extensive help from airport insiders, said air-security experts, who noted that all airports employ thousands of low-paid workers and face high staff turnover.

WSJ: Gunmen Waylay Jet, Swipe Diamond Trove