Its prevalence and sporadic cases often happened in Asia - Pacific area .

乙脑的流行和散发病例多发生在 亚太地区.

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Though polio has been practically wiped out, there have sporadic cases of the disease.

虽然小儿麻痹症已差不多被消灭, 可是仍有一些零星的病例.

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Produced by customer requirements of miscellaneous tools and sporadic cases, tools, etc. annex.

按客户要求生产了工具和零星杂件, 机床附件等等.

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