方向性的结尾方式——其与建议性的唯一差别就是对问题解决提出总的, 大体的方向或者指明前景。
[1]. Many solutions are being offered here , all of them make some sense, but none is adequate enough. The problem should be recognized in a wide way .
[2]. There is no quick method to the issue of .., but .. might be helpful/benefical.
[3]. The great challenge today is ...... There is much difficulty , but ........
