有一个地方有错误,but also后面还是陈述句语序,所以不是can they,而是they can
Not only their knowledge will be well enriched,but also they can make contribution to our society.为什么啊 后面怎么会不到装呢前面的我没看到在not noly... but also...中前面是需要部分倒装的，而后面不需要所以是：Not only will their knowledge be well enriched,but also they can make contribution to our society.