学习本质上是刺激-反应连接的问题。
Learning is essentially a matter of stimulus-response connections.
True progress in this industry comes from marrying tradition with technology.
There are many Beths in the world, shy and quiet, sitting in corners till needed, and living for others so cheerfully that no one sees the sacrifices till the little cricket on the hearth stops chirping, and the sweet, sunshiny presence vanishes, leaving silence and shadow behind.
The future of leather tanning lies in balancing tradition with technology.