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a long narrow piece of leather, cloth, etc. that you wear around the middle part of your body 腰带；皮带 
to do up/fasten/tighten a belt 系上／扎牢／扎紧腰带 a belt buckle 腰带扣 a studded leather belt 饰钉装饰的皮带 Around his waist he wore a belt. 他在腰间系上皮带。
Oxford Collocations Dictionaryadjective- narrow
- wide
- thick
- …
- buckle
- do up
- fasten
- …
- buckle
- loop
- holster
- …
a continuous band of material that moves round and is used to carry things along or to drive a machine 传送带；传动带 Oxford Collocations Dictionaryadjective- conveyor
- drive
- fan
- …
a narrow area or an area around the edge of something that has particular characteristics 地带；地区 the country’s corn/industrial belt 这个国家的产粮区／工业区 We live in the commuter belt. 我们住在通勤者居住带。 🔊🔊 a narrow belt of trees 狭长的林带 a belt of rain moving across the country 横穿这个国家的降雨带 Towns in the country's industrial belt were particularly affected by the recession. 位于该国工业区的城镇受到经济萧条的影响尤其大。
Oxford Collocations Dictionaryadjective- broad
- wide
- narrow
- …
- belt of
- (informal)
an act of hitting something/somebody hard 狠打；猛击
Word OriginOld English, of Germanic origin, from Latin balteus ‘girdle’.
Idioms
below the belt
belt and braces
- (informal)
taking more actions than are really necessary to make sure that something succeeds or works as it should 双管齐下；多重保障 a belt-and-braces policy 稳妥可靠的政策
More Like This Alliteration in idiomsAlliteration in idioms- belt and braces
- black and blue
- born and bred
- chalk and cheese
- chop and change
- done and dusted
- down and dirty
- in dribs and drabs
- eat somebody out of house and home
- facts and figures
- fast and furious
- first and foremost
- forgive and forget
- hale and hearty
- hem and haw
- kith and kin
- mix and match
- part and parcel
- puff and pant
- to rack and ruin
- rant and rave
- risk life and limb
- short and sweet
- signed and sealed
- spic and span
- through thick and thin
- this and that
- top and tail
- tried and tested
- wax and wane
have something under your belt
tighten your belt
to spend less money because there is less available 勒紧腰带（省吃俭用） With price increases on most goods, everyone is having to tighten their belt. 随着大多数商品的价格上涨，每个人都不得不勒紧腰带。 There is a need for further belt-tightening. 需要进一步的束紧。