tighten
vt. 使紧；勒紧；固定
vi. 变紧
名词：tightener 过去式：tightened 过去分词：tightened 现在分词：tightening 第三人称单数：tightens
近义词：stiffen，tauten，squeeze，constrict，tense，tightenup，screw，fasten，press，anchor，secure，contract，crush，compress，choke，fix，brace，telescope，screwin，screwdown，makefast，laceup，tieup，firmup，closeup，lockup，lock，up，firm，close，fast，tie，make，lace，together，down，force，in，reduce，constrain，loosen，
英英释义
Verb
- make tight or tighter;
"Tighten the wire"
- become tight or tighter;
"The rope tightened"
- restrict;
"Tighten the rules" "stiffen the regulations"
- narrow or limit;
"reduce the influx of foreigners"
例句
用作及物动词(vt.)
- He tightened his grip on her arm.他紧抓她的手臂。
- The plumber take out a wrench and tighten the bolt.修水管的工人拿出一把扳手拧紧了螺栓。
- This month we have to tighten our belts.这个月我不得不勒紧裤腰带过日子。
- While holding down on the cone, tighten the subbase screws.用手压住漏斗，拧紧座垫固定螺丝。
- If table index shafts are loose, tighten mounting bolts.如果台面索引轴松动，拧紧固定螺栓。
用作不及物动词(vi.)
- This screw needs tightening.这螺丝钉需要再拧紧些。
- Controls in the city have gradually tightened.对这个城市的控制逐渐加强。