Small-scale farmers are the backbone of this industry; their knowledge is invaluable.
解释：走夜路的人可以保证自己不做坏事，但却没有办法让狗不对着自己乱叫。
能源的未来在于找到传统资源和可再生替代品之间的平衡。
The world is a stage, and we are all merely players.
History has neither the venerable age of the earth nor the innocence of the child; it is always the result of human passions and human errors.