A demonstrable link between smoking and lung cancer .
抽烟和肺癌之间有明显的联系。
" Something having real , demonstrable existence "
有真实的、可论证的存在的事物。
Must knowledge be demonstrable to be valuable ?
知识一定要被证明是有价值的？
In this case , it 's a statistically demonstrable fact .
这件案子中,这是统计证实的事实.
The recent series of government packages , notwithstanding their scale and speed , has had little demonstrable effect on the level of confidence or the outlook for ongoing activity .
