非常不简单，但是我必须坚持下去。

It's difficult, but I must persevere.

youdao

我知道。我必须坚持下去。

I understood that. I had to go on.

youdao

所有这些学习活动，再加上兼职工作，让我感到筋疲力尽，但我知道自己必须坚持下去。

Doing all this, including working part-time jobs, exhausted me but I knew I had to keep going.

youdao

所有这些学习活动，再加上兼职工作，让我感到筋疲力尽，但我知道自己必须坚持下去。

Doing all this, including working part-time jobs, exhausted me but I knew I had to keep going.

youdao