语源
late Middle English (originally denoting a short written document): from Anglo-Norman French billette, diminutive of bille(see bill)The verb is recorded in the late 16th cent., and the noun sensea written order requiring a householder to lodge the bearer, usually a soldier, from the mid 17th cent.; hence the current meaninglate Middle English : from Old French billetteand billot, diminutives of billetree trunk, from medieval Latin billa, billusbranch, trunk, probably of Celtic origin
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