| 单词 | 主要发生 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔EXIST〕The disease occurs mainly in children, but can also occur in adults. 这种疾病主要发生在儿童身上，但也会发生在大人身上。朗文写作活用〔centre〕The disturbances have centred round the two main university areas.骚乱主要发生在两所大学附近的区域。柯林斯高阶〔chiefly〕The disease occurs chiefly in children.这种病主要发生在孩子身上。韦氏高阶〔haboob〕A penetrating sandstorm or dust storm with violent winds, occurring chiefly in Arabia, North Africa, and India.哈布沙暴：主要发生在阿拉伯，北非和印度的伴随狂风的猛烈的沙暴或尘暴美国传统〔paedogenesis〕Reproduction of young during the larval or preadult stage, occurring chiefly in insects.幼体生殖：在幼虫或未成熟阶段对幼体的再生，主要发生于昆虫中美国传统〔radiational cooling〕The cooling of the earth's surface and the air near the surface, occurring chiefly at night and caused by heat loss engendered by terrestrial radiation.辐射冷却：主要发生在夜晚的地面或近地面空气的冷却，由地面辐射造成的热量丧失引起美国传统〔retinoblastoma〕A hereditary malignant tumor of the retina, transmitted as a dominant trait and occurring chiefly among infants.视网膜神经胶质瘤：视网膜的一种遗传性恶性瘤，作为一种显性特征遗传，主要发生在婴儿中美国传统〔thalassemia〕An inherited form of anemia occurring chiefly among people of Mediterranean descent, caused by faulty synthesis of part of the hemoglobin molecule.地中海贫血：主要发生于地中海后裔中的遗传性贫血，由血红蛋白分子部分错误合成引起美国传统〔tremor〕The disease mostly affects people over 50, causing paralysis and uncontrollable tremors.这种病主要发生在年过50的人身上，能引起瘫痪和难以自制的颤抖。剑桥高阶 |
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