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n. 平头钉, 大头钉, 粗缝针脚, 行动方针, 食物
vt. 以大头针钉住, 附加
【经】 附加条款, 租借契约

to tack thumb tack tack eliminator hard tack tick-tack tack weld tack coat tack board tack bolt tin-tack tack inhibitor residual tack green tack tack claw tack welder tack range lead tack touch tack tack welding tack temperature