( ( In addition ) ( , ( ( both ( convex ( lens ( and ( concave lens ) ) ) ) ) ( ( can ( be ( realized ( by ( pressurized ( working oil ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN addition))) (, ,) (NP (DT both) (NN convex) (NN lens) (CC and) (NN concave) (NN lens)) (VP (MD can) (VP (VB be) (VP (VBN realized) (PP (IN by) (NP (JJ pressurized) (JJ working) (NN oil)))))) (. .)))
In addition, both convex lens and concave lens can be realized by pressurized working oil.
(ROOT (S (NP (JJ Concave) (NNS lenses)) (VP (MD can) (VP (VB correct) (NP (NN myopia)))) (. .)))