我的化学老师路易丝夫人通常在实验课的前一天晚上给我们说明书，让我们阅读。

My chemistry teacher Mrs. Louise usually gave us the instruction paper the night before the lab class and let us read it.

youdao

在最近的一次旅行中，我尝试了一下，非常有趣，不过需要手巧一点，很像以前在学校里上的化学课，只是没有实验用的本生灯(Bunsen burner)。

I tried this for a trip recently and it was quite fun to do, if a bit fiddly, much like an old chemistry class at school, minus the Bunsen burner.

youdao