对这一个案已进行深入研究。

This case has been intensively studied.

《牛津词典》

虽然人们对海洋的上层进行了深入研究，但对海洋深处的探索却比较困难。

While the top of the ocean is well studied, its depths are more difficult to explore.

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对我们来说，这些因素带来了几个新的问题和质疑，我们此时仍在进行深入研究。

These factors present several new issues and questions to us that we are still pondering at this time.

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