His earnings are 'directly proportional' to the number of units he sells.
The second game followed 'directly' [='immediately'] after the first.
Their house is 'directly' ahead. = It's 'directly' in front of us.
(..) successful fusion. They are impervious to heat and magnetism. These smart arms are controlled by my brain through a neural link. Nanowires feed directly into my cerebellum... ...allowing me to use these arms to control fusion reaction... ...in an environment no human hand could enter. (..)2004 Spider-Man 2