因此，史密斯及同事进行了更深层次的研究。

So Smith and colleagues dug a bit deeper.

youdao

我们需要对此问题有更深层次的研究和调查。

We need much more in-depth studies and investigations into this question.

youdao

随着战略成本动因理论的提出，成本理论被推进到更深层次的研究领域。

The theory of cost is going further because of strategic cost driver.

youdao

But for all that,we were looking for some deep insight into the nature of death.

但我们要研究的是死亡本质的更深层次的见地。

耶鲁公开课 - 死亡课程节选