紧 tightening: 加密; 紧缩; 扣紧; 上紧; 使紧; 收紧a tightening sensation: 发紧的感觉belt tightening: 紧缩预算,省吃俭用; 勒紧裤腰带的; 皮带张紧度; 实行紧缩政策belt-tightening: 强制性节约bolt tightening: 螺栓固紧下载手机词典可随时随地查词查翻译