These are things that are mandated by law.

这些都法律规定的事情。

They were accused of breaking the law by tailgating.

因为它们会追尾。

The Romans used conscription to force men to join the army by law.

罗马人通过征兵强制性让男性参军。

But by law, USPS has to deliver to every home in the country.

但根据法律规定，美国必须向全国每家每户提供服务。

It was signed into law by President George H.W. Bush, a Republican, in 1990.

1990年，该法案由共和党总统乔治·布什签署成为法律。

The registration and protection of trademarks are now provided for by law.

商标的注册和保护现在已有了法律规定。

We've had 'file' — make something official by law.

我们已经学了提起（诉讼）——依法使某件事正式化。

The evidence is that local ownership protected by law is usually the best answer.

证据表明，受法律保护的地方所有权通好的答案。

Other than I'm required to by law?

这法律规定我必须做的？

Firstly, it is the responsibility of a teacher to protect his students' safety by law.

首先，法律上规定，老师有责任保护自己学生的安全。

By law, every elevator has to have an emergency button of some kind.

根据法律 每部电梯都必须有某种紧急按钮。

You're only required by law to disclose anything that happened in the last three years.

法律只要求我们坦白过去三年的事。

By law, the results of the government's investigation must be shared with Congress.

根据法律，府的调查结果必须与国会分享。

By law, any piece of a space shuttle is NASA property.

根据法律，航天飞机的任何部件都NASA的财产。

The U.S. Congress made it permanent in 1966, but it's not required by law.

美国国会在1966年将其永久化，但法律却并没有对此做出要求。

Executive Orders are signed into law by the president bypassing congressional approval.

行命令由总统签署成为法律，绕过国会批准。

While it's not required by law, the ceremony is, unusual to say the least.

尽管法律没有这样的规定 但礼节必要的，至少可以说这样不太寻。

But even encrypted video can be unlocked by law enforcement, if they have a warrant.

但即使加密视频也可以被执法部门解锁，如果他们有搜查令的话。

Prior to the Civil War, some states allowed slavery by law. Others outlawed slavery.

内战开始之前，有些州认为奴隶制合法，有些州认定奴隶制非法。

Prior to the Civil War, some states allowed slavery by law.

在内战前，一些州在法律上允许奴隶制的存在。