他们发生是因为有事先存在的原因。

They happen because of pre-existing causes.

youdao

提供预先存在的业务服务的业务级别抽象。

Provide a business-level abstraction for the composition of preexisting business services.

youdao

您的特定安装可能有也可能没有预先存在的缓存实例。

Your particular install may or may not have pre-existing cache instances.

youdao

Now, we're not thinking about total antibody concentration because you already have a lot of antibodies circulating within your blood and in your fluids.

现在,我们先不考虑抗体总浓度,因为你的体内已存在许多抗体,在血液以及体液中循环

耶鲁公开课 - 生物医学工程探索课程节选

Now the natural alternative is to say, the key to being the same person is not the sameness of the soul, whether or not it exists, ! but rather having the very same--body!

现在还有一个理论认为，成为同一个人的关键,不在于是否有同样的灵魂，先不管灵魂是否存在，而是拥有同样的--肉体！

耶鲁公开课 - 死亡课程节选