In fact, usually the system blocks anyone trying to sign up for a class they shouldn't be taking, who hasn't taken the courses you are required to do first as prerequisites.

事实上，这个系统通常会阻止任何想要注册他们不应该选的课程的人，也就是那些没有选必选先修课程的学生。

youdao

His son, age 15, who had taken an art appreciation class, thought that there was something unusual about the one with a young girl sitting on a garden chair.

他15岁的儿子上过一门艺术欣赏课，他认为其中一幅画有点不寻常，那幅画中有一个年轻女孩坐在花园的椅子上。

youdao

When an XML tag corresponds to a class, the tag name is taken directly from the class name.

当XML标记对应于一个类时，标记名就直接取自类名。

youdao

If the land isn't taken up by large oligarchies life slaveholding class--then the small guy has a chance.

如果土地没有被大的垄断方占有,奴隶阶级,弱小的一方就仍会有希望

耶鲁公开课 - 美国内战与重建课程节选

She'd taken a National Guard class that prepares spouses for a soldier's return.

NPR: Back from Iraq, Dad Settles in at Maryland Home

Philip Ruddock, the immigration minister, has taken a backward step by introducing a kind of second-class citizenship for some refugees.

ECONOMIST: Huddled masses

The agency says some drugs should never be taken with Mevacor including protease inhibitors, a class of HIV drugs and certain drugs used to treat bacterial and fungal infections.

CNN: Statin labels will come with new safety warnings