retrovert (vt.)向後彎曲,使後屈
Re·tro·vert v. t. [imp. & p. p. Retroverted; p. pr. & vb. n. Retroverting.] To turn back. ◄ ►
retrovert v : go back to a previous state; "We reverted to the old rules" [syn: revert, return, regress, turn back]