人类与牲畜之间的联系是历史上最古老、最重要的伙伴关系之一。
The bond between humans and livestock is one of the oldest and most vital partnerships in history.
The older I get, the more wisdom I find in the ancient rule of taking first things first—a process which often reduces the most complex human problem to a manageable proportion.
文学的美在于它让我们在一生中活过千次。
不曾有过一个女儿这样爱过他的父亲,也不曾有一个父亲这样被他女儿爱。
你必须为梦想而奋斗,你必须为之牺牲和努力。
PID控制器是控制工程师的通用工具,适用于各种各样的过程。