I
см. тж. если ~ предположения о
• A paraboloid's light rays originate at the focus.
• The light originates ( or emanates ) from a tungsten lamp.
• The commands emanate from the locust's central flight motor.
• This noise emanates ( or radiates , or issues ) from many sources.
• All vectors emanate from a single point.
• The lines emerge ( or issue ) from a point.
II
• We usually proceed ( or start ) from simple functions associated with ...