occlusion 

58784
单词释义
n.包藏;吸着;闭塞,闭合
词根词缀记忆/谐音联想记忆 补充/纠错
词根oc 加强 + clus 关闭 + ion 表名词  …………
对比记忆 / 类比记忆 / 形近词记忆
词根记忆 / 词缀记忆
occlusion n 堵塞(oc+clus+ion)
clos, clud, clus=close,表示”关闭”
closure n 关闭,停止(clos+ure;close的名词)
closet n 壁橱,秘室(clos+et小东西=关的小东西= …………
单词例句
The product focuses on macular edema caused by retinal vein occlusion (RVO), an eye disease that puts about 7.4 million patients in China at risk of going blind.
If not treated in time, over 90 percent of the central retinal vein occlusion patients' final visual acuity will be lower than 0.1, causing blindness.
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