1. The Education Ministry has tried to combat the juku system by improving public schools, reducing class sizes, improving teacher training, and making the curriculum more flexible.
    教育部已试图向课外学校体制发起挑战，措施包括改善公立学校，缩小班级规模，加强师资培训，灵活设置课程等。

2. One organization, the South Carolina AIDS Education Network, formed in 1985 to combat the growing number of AIDS cases.
    南卡罗来纳艾滋病教育网络机构成立于1985年，目的在于防止艾滋病病例数量的增加。

3. Flying in combat and managing the complex weapons system requires considerably more concentration.
    在战争中驾驶并控制好那些复杂的武器系统则需要更加地专心。