丝毫没有，这位据称力求精确的科学家，居然只给出了一个纯粹的断定。
None whatever, for this allegedly precise scientist has only pure assertion to offer.[2]
差不多的词，不准确的短语，模棱两可的表达，含糊不清的修饰，都无法满足一个力求用词精确的作家的要求。
A word that is more or less right, a loose phrase, an ambiguous expression, a vague adjective, will not satisfy a writer who aims at clean English.
设计并进行了集料挤压破碎力实验，并以此建立较为精确的挤压破碎力求解模型；
The rock material compression experiments were carried out and a pressure model relating compression ratio and particle size distribution to compression pressure was presented.
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