Complex sentence: To combat them, the nations of the Pacific Rim build the Jaegers: equally colossal humanoid war machines, each manned by two pilots whose brains are linked to share the overwhelming mental load of piloting the sophisticated machines.
Split into simpler sentences: To combat them, the nations of the Pacific Rim build the Jaegers: equally colossal humanoid war machines. Each Jaegar is manned by two pilots whose brains are linked to share the overwhelming mental load of piloting the sophisticated machines.