YSP offered the safety net of unlimited email contact and an optional physical meet-up with a local person, but found a greater market in young professionals and retirees.
YSP提供安全的交际网络，在其中人们可随意用电子邮件联系或者选择性地当地人会面，但却在年轻的专业人士和退休人士中发现了更大的市场。
This information is optional, but it's good practice to supply an email address if people want to reach you about the project.
这些信息是可选的，但提供电子邮件地址是比较实际的做法，因为人们可能希望与您取得联系。
Real ID is an optional, richer level of identity, as it displays your real name, and can ONLY be shared by adding a friend through an email address.
实名ID是可选的，更高一级的身份，它显示你的真实姓名，并只能对被通过加电子邮箱的好友可见。
If you wish to have the IAEA send you an electronic copy of the report summarizing the findings of this study once it is available, please provide your name, title and email address (optional).
如果您希望国际原子能机构向您发送一份本问卷调查结果报告的电子副本当本报告发表后，请提供您的姓名，职务和电子邮件地址(可选)。
Simply visit the Manage Account page, scroll to your ‘Orders’ list, click ‘Loan This Book’, enter the “borrower”‘s name, email address and an optional message… and you’re done.
很简单，登录后点击账户管理，填好你的“订单”，点击租借此书，接着输入借阅人姓名，邮箱和其他附加条件，这样你就可以免费享有14天的试用了。
Optional: Enable Email functionality.
可选：支持电子邮件功能。
Leaving your email is optional, and in any case, it will not be revealed.
离开您的电子邮件是可选的，在任何情况下，也不会透露。
Your email address is optional, but it is our preferred method of contacting you.
电子邮件地址是可选的，但这是我们和您进行联络的首选方式。
Your email address is optional, but it is our preferred method of contacting you.
电子邮件地址是可选的，但这是我们和您进行联络的首选方式。
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