( ( ( ( ( Diffusion ( continues ( until ( ( a ( dynamic equilibrium ) ) ( is ( reached ( ( the molecules ) ( continue ( to move ) ) ) ) ) ) ) ) ) , ) but ) ( there ( is ( no ( net ( directional movement ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNP Diffusion)) (VP (VBZ continues) (SBAR (IN until) (S (NP (DT a) (JJ dynamic) (NN equilibrium)) (VP (VBZ is) (VP (VBN reached) (SBAR (S (NP (DT the) (NNS molecules)) (VP (VBP continue) (S (VP (TO to) (VP (VB move))))))))))))) (, ,) (CC but) (S (NP (EX there)) (VP (VBZ is) (NP (DT no) (JJ net) (JJ directional) (NN movement)))) (. .)))
Diffusion continues until a dynamic equilibrium is reached the molecules continue to move, but there is no net directional movement.
(ROOT (S (NP (DT A) (VBG moving) (NN car)) (VP (VBZ is) (VP (VBN said) (S (VP (TO to) (VP (VB be) (PP (IN in) (NP (JJ dynamic) (NN equilibrium))) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (VBZ is) (NP (CD zero) (JJ net) (NN force)))))))))) (. .)))