sporadic case的用法和样例:
例句
- 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。
- Though polio has practically been wiped out, there have been sporadic cases of the disease.
小儿麻痹症虽然实际上已被消灭,但一直有散发病例出现。
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