1. We delved into the newspaper files to find out the facts. 我们钻研报纸合订本以查明事实。
2. Ah this is a complex subject, but one that we will delve into. 啊,这是一个复杂的题目,但是我们将钻研它。
3. This is troublesome for many reasons that we wish to delve into so that it can be rectified in the personal ascent of each who reads of our materials. 这在很多方面都是有麻烦的,我们希望来对此深究,以便阅读我们资料的每个读者都可以在个人提升中得到纠正。