"I had never taken a course in physics, or calculus, or differential equations," he wrote to Professor Lewin.

“我从来没上过一节物理或者微积分课程”他告诉Lewin教授。

youdao

"I had never taken a course in physics, or calculus, or differential equations," he wrote to Professor Lewin.

“我从来没上过一节物理或者微积分课程”他告诉Lewin教授。

youdao