continuing forever or indefinitely
any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
an efficient person
an intricate organization that accomplishes its goals efficiently
the use of movements (especially of the hands) to communicate familiar or prearranged signals
a natural event that involves a change in the position or location of something
a change of position that does not entail a change of location
a state of change
show, express or direct through movement
the act of changing location from one place to another
