The reports also do little to help us realize that science seldom provides answers that are final and beyond challenge .
新闻报道也很少帮助我们认识，科学绝少提供最终的、经得住挑战的答案。
It is beyond challenge that tense occupies a crucial position in English grammar, but little has been achieved about its cohesive function in text.
时态在英语语法中的重要性是无可置疑的，但是从篇章学的角度来分析时态的语篇衔接功能的研究还很少。
It is beyond challenge that tense occupies a crucial position in English grammar, but little has been achieved about its cohesive function in text.
时态在英语语法中的重要性是无可置疑的，但是从篇章学的角度来分析时态的语篇衔接功能的研究还很少。
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