飛(ひ)行(こう)機(き) hikoukiは wa雲(くも)の()上(うえ) kumonoueを o飛(と)ん()で()い()る() tondeiru。 The airplane is flying above the clouds. Literal Airplane [topic-は] clouds [possessive-の] above [path-を] is-flying. を marks the path/space through which the plane flies, and ~ている marks the action as ongoing. A clean example of the progressive aspect with a motion verb. airplanestransportationを (path of motion)~ている (ongoing state)
飛(ひ)行(こう)機(き) hikoukiは wa雲(くも)の()上(うえ) kumonoueを o飛(と)ん()で()い()る() tondeiru。 The airplane is flying above the clouds. Literal Airplane [topic-は] clouds [possessive-の] above [path-を] is-flying. を marks the path/space through which the plane flies, and ~ている marks the action as ongoing. A clean example of the progressive aspect with a motion verb. airplanestransportationを (path of motion)~ている (ongoing state)