已展开调查以确定事故原因。

An inquiry was set up to determine the cause of the accident.

《牛津词典》

她把它晃了晃，以确定里面没有东西。

She shook it to make sure there was nothing inside.

《牛津词典》

进行了尸检以确定死因。

A postmortem was carried out to establish the cause of death.

《柯林斯英汉双解大词典》

Then they test you to make sure that you have adequate protection, and some people need an additional shot after that.

然后医生会检测以确定你已获得了保护,有些人在测试完后需要再打一针

耶鲁公开课 - 生物医学工程探索课程节选

the zeroth law, which is the common-sense law, which says that if you take a hot object next to a cold object, heat will flow from the hot to the cold in a way that is well defined, and it allows you to define temperature.

上节课我们讨论了，热力学第零定律,这一定律源自常识：如果把一个热的物体,与一个冷的物体挨在一起，热量就会以确定的方式。

麻省理工公开课 - 热力学与动力学课程节选

And they also developed a very reliable way for introducing the virus, so that when they had a defined preparation of virus, then you want to make sure that everybody gets it in their skin in the right way.

他们还发明了一种可靠的方法来引入病毒,当人们有了确定的病毒制剂之后,就要要保证这些制剂都以正确的方式,注射至皮下

耶鲁公开课 - 生物医学工程探索课程节选