blow down
动词- To knock over with an air current, most often wind. · I'll huff and I'll puff and I'll blow your house down.
- To clean off from top to bottom with an air current from a compressed air hose. · Blow down this enclosure and do some chip handling before you run this machine any further.
- Synonym of dirty down.
- To kill (someone) with a gun.
- To signal to someone by blowing into a whistle.
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