( ( Any time ) ( ( that ( divers ( breathe ( compressed air ) ) ) ) ( , ( ( their bodies ) ( ( accumulate nitrogen ) . ) ) ) ) )
(ROOT (S (NP (DT Any) (NN time)) (SBAR (IN that) (S (NP (NNS divers)) (VP (VB breathe) (NP (JJ compressed) (NN air))))) (, ,) (NP (PRP$ their) (NNS bodies)) (VP (VBP accumulate) (NP (NN nitrogen))) (. .)))
Any time that divers breathe compressed air, their bodies accumulate nitrogen.
(ROOT (S (SBAR (IN As) (S (NP (DT a) (NN diver)) (VP (VBZ descends)))) (, ,) (NP (NP (DT the) (NN increase)) (PP (IN in) (NP (NN pressure)))) (VP (VBZ causes) (NP (NP (DT the) (NN body) (POS 's)) (NN air) (NNS pockets)) (PP (IN in) (NP (NP (DT the) (NNS ears) (CC and) (NNS lungs)) (PP (TO to) (NP (NNS compress)))))) (. .)))