视频对白:

By means of words,skills can be rapidly taught and problems quickly explained and solved.
用文字来讲，技术可以迅速的教育问题可以很快解释和解决。

by means of
借用，依靠

例句:

1.They succeeded by means of hard working.
他们依靠努力工作而获得成功。
2.He succeeded by means of perseverance.
他是通过坚持成功的。