medical [ C or U ] in medicine, something that blocks a tube or opening in the body, or when something is blocked or closed栓塞(医学术语,血管或体内开口处的阻塞)
medical [ U ] in dentistry, the way in which your upper and lower teeth meet(牙科术语)上下牙齿的咬合
environment [ C ] also occluded front a situation in the weather when two masses of air meet, especially when a mass of cold air reaches warm air and pushes the warm air up off the earth's surface锢囚锋(两个锋面相遇而形成的锋面,尤指冷空气将其前面的暖空气抬高而形成的锋面)
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