Almost all variations in living standards are explained by differences in countries'productivities.几乎全部的生活水平的不同都可以由生产率的不同来解释.Global warming affects productivities of plants, and then, the structure and evolution of ...
他被控谋划妨碍司法公正。He was charged with conspiring to pervert the course of justice.五角大楼称恶劣天气妨碍联合空袭。The Pentagon says bad weather is hampering the allied air raids.网站并不妨碍目前的销售。A website need not cannibalise existing sales....
这些机器将来会需要备件和维修保养。In the future the machines will need spare parts and maintenance.除了给轮胎充气外，我没做过任何汽车保养。Other than blowing up a tyre I hadn't done any car maintenance.车越来越旧，保养得也越来越差。The cars are getting older and less...