1·During a total eclipse, the Sun's disk is completely occulted by the Moon.
在日全食期间，太阳将被月球完全覆盖。
2·The noise occultation was significant, and the undertone was the easiest one to be occulted.
噪音对信号的掩蔽作用显著，其中低音最易被掩蔽。