We're gonna assume that you understand reactor physics, and this is basically a refresher course.

我们假设你们理解了反应堆物理，这主要是一门复习课程。

He go on a refresher course in bookkeeping.

他继续学习笔记进修课程。

I am taking a refresher course to improve my driving.

我正在参加补习训练以提高自己的驾驶技术。

I have taken a refresher course to improve my driving.

我参加了补习训练以提高自己的驾驶技术。

I'd like to take a refresher course to improve my driving.

我想参加补习训练以提高自己的驾驶技术。