All visitors must sign in on arrival.

来客均须签到。

《牛津词典》

Click Sign In on the home page.

单击主页上的Sign In。

youdao

The update allows sites to install a translation gadget on their sites through Facebook Connect, a service that lets Facebook users sign in on other Web pages.

这个更新使得其他网站通过链接脸谱安装上一个翻译小工具，而这项服务让脸谱用户能够注册其他网页。

youdao

"This one is "Variations on K", because this is the word kiss in every language, including sign language.

VOA: special.2009.11.04

If you give a sign, on top of the number, that takes care of all ambiguity in one dimension.

如果你在数字前加一个符号,就把一维运动的所有的歧义解决了

耶鲁公开课 - 基础物理课程节选

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

One of the first big producers to sign on in 2008 came from Morgan Stanley.

FORBES: OutFront

When you start using the app, you'll see that the UI has been adjusted to make it look great on the Q10 display, and that it's super easy to connect with your friends and family, as Skype contacts are automatically added to your phonebook when you sign in to Skype on your device.

ENGADGET: Skype launches BlackBerry 10 preview, but only for Q10 owners at first (update: official)

Last year the site saw a massive increase in sign-ups on February 15, largely married women.

FORBES: Washington D.C.: Capital of Marriage Infidelity