有时候部分车辆、房屋和其它财产被掩蔽起来。
Sometimes cars, buildings, and other properties are partially buried.
噪音对信号的掩蔽作用显著，其中低音最易被掩蔽。
The noise occultation was significant, and the undertone was the easiest one to be occulted.
中的杂环可以看作是一个被掩蔽的，处于暂时停顿状态的稠环。
The heterocyele in (4) is a masked fused ring held in abeyance.
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