sentinel
US /ˈsen.t̬ɪ.nəl/
UK /ˈsen.t̬ɪ.nəl/
名詞
1.
歩哨
a soldier or guard whose job is to stand and keep watch.
動詞
1.
歩哨
station a soldier or guard by (a place) to keep watch.
例:
•
a wide course had been roped off and sentineled with police
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