He was conversing in the Danish language with a tall man, of robust build.

他正在用丹麦语与一个身材高大、体格健壮的男人交谈。

He delivered him his letters from Copenhagen, and then followed a short conversation in the Danish language, the purport of which I was quite ignorant of, and for a very good reason.

他把从哥本哈根寄来的信交给了他，然后用丹麦语进行了简短的交谈，我完全不知道其要旨，但这是有充分理由的。