The @ symbol or the "at sign" separates a person's online user name from his mail server address.

符号@或'at'标记将上网用户的姓名与其邮件的服务器地址分开。

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The most plausible theory is that the at sign evolved from the grave-accented "a" (a, which is also "at" in Italian).

似乎最有道理的看法是，“at”符号是从重音符“a”(a，这也是意大利语的“at”)演变而来。

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When you fill out your valuable personal info at sign-up, Playboy gets instant access to that info, without Apple's pesky permissions dialog getting in the way.

当你在注册时填写你有价值的个人信息，花花公子有直接的权限获取那些消息，而没有苹果可恶的限制对话框的阻碍。

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He said they would rise up at the first sign of a leader who wished to break their chains.

VOA: special.2009.06.18

At each cross-section, people are either willing to use a certain sign in a certain way or they're not.

在每一个横街面上，人们可以自由的,以自己的方式使用符号。

耶鲁公开课 - 文学理论导论课程节选

And if any of you here are nodding in agreement at these sentiments, that's not such a good sign.

如果在座有同学,点头同意这些人的观点，这可不是一个好迹象。

耶鲁公开课 - 心理学导论课程节选

These cards can help some people pay for needed procedures but they also come with some costs that may not be clear at sign-up.

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Ken Gutman spent 22 years at Sign-A-Rama, a West Palm Beach, Fla. franchisor of business-sign shops, climbing from store manager to chief operating officer of the 1, 300-unit chain.

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Though they help some people pay for important procedures, the cards come with a number of drawbacks that may not be apparent at sign-up, including rates that can quickly spike.

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