年轻的先生, 这种强壮剂古人是不知道的.This corroborative, young sir, was unknown to the ancients.也是一种强壮剂,使人迅速恢复体力.It is also a strength agent for rapid restoration of physical strength....
There is a shortage of carrots. So everybody starts growing carrots. Next season, surprise, surprise, there is a glut of carrots.胡萝卜紧缺，于是大家都去种胡萝卜。等到来年这个时候，可想而知，胡萝卜就会过剩。The glut of coffee led to a sharp drop in prices.咖啡供...
存在着许多势能和动能的能源.There exist many sources of energy both potential and kinetic.最大势能和总能量是 多少 ?What are the maximum potential energy and the total energy?因此,我们可以说,该系统有内势能.We can therefore say that the system has internal pote...