aids — AIDS is a disease which destroys the natural system of protection that the body has against other diseases. AIDS is an abbreviation for 'acquired immune deficiency syndrome'.
helps — Third-person singular simple present indicative form of help.
hinders — to cause delay, interruption, or difficulty in; hamper; impede: The storm hindered our progress.
stops — to cease from, leave off, or discontinue: to stop running.
vetoes — the power or right vested in one branch of a government to cancel or postpone the decisions, enactments, etc., of another branch, especially the right of a president, governor, or other chief executive to reject bills passed by the legislature.
countermands — Third-person singular simple present indicative form of countermand.
follows — Third-person singular simple present indicative form of follow.
centres — Geometry. the middle point, as the point within a circle or sphere equally distant from all points of the circumference or surface, or the point within a regular polygon equally distant from the vertices.
