A body bent forward, he didn't appear to use exertion or know weariness . 尽管身体向前弯着,他并不显得费力,也毫无倦容。
But in our country they are separated and repeated severity because of lacking the necessary technology . it is very hard to control and manage at the same time . these restrict using exertion and enhancement 由于缺乏必要的技术支撑,我国生产设备的自动化程度还不高,并且设备分散,低水平重复现象严重,很难进行统一控制和管理,于是大大制约了其作用的发挥及其自身水平的提高。