But he says that wasn't his motivation for studying pollutants in the deep ocean.

但是他说，这并不是他研究深海污染物的动机。

youdao

Just imagine if you were studying mathematics for ten years, but could not do a single algebra problem. Obviously, the issue isn't motivation.

想象一下如果你学习十年的数学，还是不能解决一个最简单的代数问题。

youdao