签到；注册；登记；签收

signing on───开始广播；签约雇用

digging in───掘土以掺进；掘土把…埋起来；开始认真工作；掘壕固守

signing up───签约雇用，签约参加

sinking in───渗入；完全被理解

sitting in───列席，旁听；参加；代理

signing for───签收

signing off───船员解雇签署；声明离开

signing out───签名登记离开；用签名记录离开的时间

slipping in───悄悄溜入；偷偷溜进去

After signing in you will see the user interface with a couple of balloon tips to get you started.───登陆完成后，你能看到一个用户界面，上面的提示将帮助您开始使用这款软件。

Real Madrid sold staggering quantities of team jerseys in Britain on the weekend of his signing in 2003.───签约皇马的那个周末，球队队服在英国卖出惊人的销量。

Code signing in Android is done in a much simpler manner than in other mobile platforms.───Android中的代码签名采用一种比其他移动平台中要简单得多的方式。

The treaty-signing in Prague comes almost exactly a year after Obama spelled out his long-range goal of a world without nuclear weapons.───条约在布拉格的签署正值奥巴马阐发他的长远愿景——一个无核武器世界一周年。

Blair is due to hold another book signing in London next week which anti-war protestors have also said they will target.───布莱尔将于下周前往新书宣传的下一站伦敦，反战抗议者已经放出话来，将继续将矛头指向布莱尔。

On its own Twitter account, at 1. 30pm, Skype officials wrote: 'Some of you may have problems signing in to Skype and making calls. '───在昨天下午一点半，Skype公司的官员在其自己的Twitter帐户上说：“你们有些人有可能不能登录到Skype和拨打电话。”

Sign in Advertising: Direct and customised advertising messages at time of signing in to the GDS by the travel agent.───注册广告（SigninAdvertising）：旅游代理商注册登录GDS时定制式的直接广告信息。

Annie: I am really confident now after hearing what you said. I begin to think of signing in for this course.───安妮：听你这么一说，我还真有信心了，从现在开始我将考虑是否选修这个专业？

The signing in May of a $20bn-plus deal with Nigeria to build oil refineries and infrastructure represents a crucial breakthrough.───今年5月，中国与尼日利亚签署了一份价值逾200亿美元的协议，兴建炼厂及其它基础设施，这是一个关键性的突破。

This contract shall be valid upon signing in quadruplicate, two copies for each party.

A recent job advert for travel representatives abroad asked for language skills and included signing in the list of useful languages.