In many countries, there is simply no money available for research of any kind as they are merely subsistent countries that even lack adequate funding to properly feed their own populations.
在许多国家，根本弄不到任何资金来进行任何性质的研究，因为这些国家只是些勉强维持生存的国家，甚至还缺乏充足的资金来使其人口得以果腹。
Trace elements in human bones have been widely used as indicators to reconstruct ancient diet, subsistent pattern and economic change.
人体骨骼中微量元素已经广泛地应用为重建古代食物结构、生存方法、经济生活变化的指示剂。
It is difficult to parallelize a subsistent sequential algorithm.
对已有的串行算法进行并行化，是一项很困难的工作。
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