as blind as a bat

covalent graph credibility gaps delayed coke earth-probing radar earth-space window F (face width) flat-plate pressing machine G.P.O. high-speed ion ledgerless bookkeeping malthodes (malthodes) taiwanus out-voice primitive scheduling quasi-official bribery second-order closure smooth stabilized soil mixing plant Storkow thermal infrared multispectral scanner three-phase three-wire system