d2y1pz2y630308.cloudfront.net · Life Without Gravity spines (spÎnz) n. backbones (p. 373) Sitting...
11
d2y1pz2y630308.cloudfront.net · Life Without Gravity spines (spÎnz) n. backbones (p. 373) Sitting up straight is good for our spines. a feeble (fê' bel) adj. weak; infirm (p. 374)