Environmentalists say HFO produces higher emissions of harmful pollutants, including sulphur oxide, nitrogen oxides, and black carbon. Absolutely true. And that, to me as a security person, spells trouble. The security ones as well. Please make sure your browser supports JavaScript and cookies and that you are not blocking them from loading.
HFO means Homeward Interior Vectors.
( z0 mean :ARG1 ( z1 string-entity :value "HFO" ) :ARG2 ( z2 string-entity :op ( z3 Interior ) :op ( z4 Vectors ) :value "Homeward" ) )
(z0 / mean-01
    :ARG1 (z1 / string-entity
              :value "HFO")
    :ARG2 (z2 / string-entity
              :op2 (z3 / Interior)
              :op3 (z4 / Vectors)
              :value "Homeward"))
HFO means Homeward Interior Vectors .
z1 :value 0
z0 :ARG2 z2
z0 :ARG1 z1
z2 :value 1
z2 :op2 z3
z2 :op3 z4