顺便说一下，我们常常感到沮丧，这一个非常不好的影响，我们的研究。

By the way, we often feel frustrated, which has a very bad effect on our study.

youdao

我们说：我常常担心和感到沮丧。

WE SAY: "I'm always worried and frustrated."

youdao

我们说：我常常担心和感到沮丧。

WE SAY: "I'm always worried and frustrated."

youdao