( ( In ( other words ) ) ( , ( ( in ( ( ( the ( sidereal month ) ) ( -LRB- ( ( ( the time ) ( it ( takes ( the ( moon ( to ( ( revolve &#160; ) ( around ( the earth ) ) ) ) ) ) ) ) ) -RRB- ) ) ) ( of ( 27.321661 days ) ) ) ) ( , ( ( the moon ) ( ( ( ( ( ( ( ( rotates on ) ( its ( axis precisely ) ) ) once ) , ) ( i.e. ( ( its ( rotation period ) ) ( ( is also ) ( 27.321661 days ) ) ) ) ) -- ) ( ( ( ( no more ) , ) no ) less ) ) ! ) ) ) ) ) )
(ROOT (S (PP (IN In) (NP (JJ other) (NNS words))) (, ,) (PP (IN in) (NP (NP (NP (DT the) (JJ sidereal) (NN month)) (PRN (-LRB- -LRB-) (NP (NP (DT the) (NN time)) (SBAR (S (NP (PRP it)) (VP (VBZ takes) (NP (DT the) (NN moon) (S (VP (TO to) (VP (VB revolve) (NP (CD &#160;)) (PP (IN around) (NP (DT the) (NN earth))))))))))) (-RRB- -RRB-))) (PP (IN of) (NP (CD 27.321661) (NNS days))))) (, ,) (NP (DT the) (NN moon)) (VP (VBZ rotates) (PRT (RP on)) (NP (PRP$ its) (NNS axis) (RB precisely)) (ADVP (RB once)) (, ,) (S (VP (VBG i.e.) (SBAR (S (NP (PRP$ its) (NN rotation) (NN period)) (VP (VBZ is) (ADVP (RB also)) (NP (CD 27.321661) (NNS days))))))) (: --) (ADVP (ADVP (RB no) (RBR more)) (, ,) (RB no) (ADVP (RBR less)))) (. !)))
In other words, in the sidereal month (the time it takes the moon to revolve &#160; around the earth) of 27.321661 days, the moon rotates on its axis precisely once, i.e. its rotation period is also 27.321661 days -- no more, no less!
(ROOT (S (NP (NNP Earth)) (VP (VBZ rotates) (PP (PP (IN on) (NP (PRP$ its) (NNS axis)) (ADVP (RB once))) (CC times) (PP (IN in) (NP (CD one) (NN day))))) (. .)))