n the limits within which something can be effective
n an area in which something acts or operates or has power or control: "the range of a supersonic jet"
n the act of physically reaching or thrusting out
n the limit of capability
v reach a destination, either real or abstract
v reach a point in time, or a certain state or level
v move forward or upward in order to touch; also in a metaphorical sense
v be in or establish communication with
v to gain with effort
v to extend as far as
v reach a goal, e.g., "make the first team"
v place into the hands or custody of
v to exert much effort or energy
n. 河段;流域;(上、中或下)游; (外)围;(远)处; (组织或机构中的)层级