| 单词 | 周期性地 |
| 释义 | 〔oscillate〕To swing back and forth with a steady, uninterrupted rhythm.持续周期性地摆动：以稳定的、不间断的节奏来回摇摆〔appear〕New strains of viruses appear periodically.新菌系的细菌周期性地产生〔cycle〕To move in or as if in a cycle.循环：周期地或者好象周期性地运动〔pivotal〕"Its pivotal location has also exposed it to periodic invasions"(Henry A. Kissinger)“其地点的重要性也使得它周期性地遭受侵略”(亨利A.基辛格)〔malaria〕An infectious disease characterized by cycles of chills, fever, and sweating, caused by the parasitic infection of red blood cells by a protozoan of the genusPlasmodium, which is transmitted by the bite of an infected female anopheles mosquito. Also called paludism ,swamp fever 疟疾：一种传染性疾病，症状为周期性地感到冷、热和发汗，病因是寄生于红血球的一种疟原虫 属原生动物，这种动物通过已感染病菌的雌性疟蚊传播 也作 paludism,swamp fever |
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