您的电子邮件地址是必填内容，但是可以选择将它隐藏起来，这样就不会显示在您的公共概要信息中。

Your E-mail address is required, but you can elect to hide it so that it's not visible from your public profile.

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顾客填写所有必填的信息。

The customer provides any remaining required information.

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为了帮助非技术用户，调查至少应该包含解释如何填写必填字段的信息。

The survey should at least include information on how to determine the data for the mandatory fields, to support the non-technical users.

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