解析：教导学生，不到他想弄明白而不得的时候，不去开导他；不到他想出来却说不出来的时候，不去启发他。
The beauty of chemistry is that it's everywhere—you just have to look for it.
The future of manufacturing lies in closed-loop systems.
当我们想到过去时，我们挑选的是美好的事物。我们想相信一切都是那样的。
From life, from books, from others, we learn.