outrider

US /ˈaʊtˌraɪ.dɚ/

UK /ˈaʊtˌraɪ.dɚ/

先導者, 護衛

a person who rides on horseback or in a vehicle as an escort or guard

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The dignitary's motorcade was led by a team of police outriders.

要人の車列は警察の先導車チームに先導されていた。

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Historically, outriders were common for royal processions.

歴史的に、先導者は王室の行列で一般的だった。