( ( ( ( ( Thick or ) opaque ) ( with matter ) ) ( in suspension ) ) ; )
(ROOT (S (VP (VB Thick) (CC or) (VB opaque) (PP (IN with) (NP (NN matter))) (PP (IN in) (NP (NN suspension)))) (: ;)))
Thick or opaque with matter in suspension;
(ROOT (S (NP (NNP Opaque)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NN matter))) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB let) (NP (DT any) (JJ light) (NN pass)) (PRT (RP through)))))))) (. .)))