nothing ventured nothing gained

all-optical xor gate Coelogyne cristata continued-fraction approximation denudation mountain diving key type transmission exocentrus alboguttatus taiwanensis georgia barks Heloniopsis umbellata list processing system multi-cell plenum craft piston gaslift equipment programmed decision making reciprocal two-ports scutelliform sleep-eating strap-oil travelling gear brake underreaching ytterbium(Yb) zircofluorides