Or, he signed up to join the army.

或者，他参军了。

But Ali, how do I sign up to Nebula?

但是阿里，我怎么注册 Nebula？

Ukraine has yet to sign up to the deal.

乌克兰尚未签署该协议。

He signed up to take calculus in the autumn.

他报名参加秋季的微积分课程。

Customers are also signing up to Disney in droves.

用户也在一批批地注册迪士尼 。

I did it! I signed up to be a tutor.

我做了！我报名成为了一位家教。

He even signed up to do a portrait of him.

他甚至签了约去为他绘制肖像。

Those traps are internationally approved. We sign up to international conventions.

皮毛收集得到了国际社会的认可。我们签署了国际公约。

Anyone can sign up to the course and complete it for free.

大家都可以注册，免费参加课程。

Just over three million students signed up to take the annual exam.

报名参加年度考试的学生只有300多万。

About 200 publishers in six countries have signed up to the product.

目前六个国家约200家出版商已与该产品签订协议。

At least 20 countries will sign up to the French and German-led plan.

至少20个国家将在法国和德国主导的这份计划上签字。

Pretty soon, he signed up to be the onboard naturalist on the " Beagle."

不久，他报名成为 小猎犬船上的博物学家。

They argue the U.S., for instance, has not signed up to the ICC.

他们称美国就没有加入国际刑事法院。

U.S. citizens have to register (or sign up) to be able to vote.

美国公民必须登记（或报名）才能选举。

So do yourself a favor and sign up to Skillshare.

所以，帮自己一个忙，去注册 Skillshare 吧。

I think there are a lot of astronauts that would sign up to that.

我想有很多宇航员都会报名。

Or, today, a bunch of new people signed up to Rachel's English Academy.

或者，今天，一群新学员加入了瑞秋的英语学院。

Since then, more than 200 state employees have signed up to become substitute teachers.

从那时起，已有200多名州政府雇员报名成为代课教师。

And for those willing to pay, signing up to Global Entry is an option.

对于那些愿意付费的人来说，注册“全球入境”是一种选择。