tightenvt.使紧;勒紧;固定vi.变紧
tightening cushion预紧垫片
tighten one's belt束紧腰带
tighten the screwsvi.拧紧螺丝(加强控制)
tighten their beltvi.勒紧腰带(忍饥受寒;节衣缩食;减少开支)
tighten up security使安全措施更严密.
tighten the economy紧缩经济
tighten the noose on加紧对 ... 的控制
tightening indicator张紧指示器
tighten the bonds of加强 ... 联系
tightening of credit紧缩信贷