screw up紧: taut; tight螺丝: screw夹紧螺丝: clamp screw扣紧螺丝: fastening拉紧螺丝帽: turnbuckle下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:紧螺丝,即可在微信中查询翻译