sentinel [i s3ntQnl ]    (¼øÀ§: 9401 - ´ëÇÐ ¼öÁØ)  
½ÃÁ¦ sentineled, sentinelled - sentineled, sentinelled; sentineling, sentinelling
¶æ ¸í) º¸ÃÊ;Æļöº´
Mean One that keeps guard; a sentry.
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