你的第二个任务是，回想当初学习造句的过程。

For your second mission, think back to learning to form sentences.

youdao

也许在学期初学习矩阵的时侯,我们并没有充分的强调它。

So, that's one thing that maybe we didn't emphasize enough when we did matrices at the beginning of a semester.

youdao

“我总是这么想问题，”他强调，眺望着这个他最初学习赛车的城市。

"That's the way I always think," he stresses, looking across the city where he first learned to race.

youdao