高等学校理论课程授课时间占总教学时间的二分之一以上，理论课程的教学效果直接影响人才的培养质量。
In colleges the teaching hours for theoretical courses take up more than half of the total ones, and the teaching effect of these courses directly influences the quality of qualified personnel.
就连大米这种养活着世界二分之一人口的最基本的食物，也在去年的一年时间里价格翻了一番。
The price of rice - the food staple that feeds half the world's population - has more than doubled in the past year.
与先前的模拟程序相比，可节省计算机内存约二分之一，节省运算时间85%以上，且功能增强。
Compared with previous work, FXD-LW can save about one half storage units and more than 8596 computation time, and its function is also enhanced significantly.
与先前的模拟程序相比，可节省计算机内存约二分之一，节省运算时间85%以上，且功能增强。
Compared with previous work, FXD-LW can save about one half storage units and more than 8596 computation time, and its function is also enhanced significantly.
应用推荐