折り畳み自転車 BD-1 でサイクリングをはじめる;Sat R Day Recumbent,Brompton, ViewPoint Tandem, Greenspeed GTX Trike, Tandem Two'sDay と自転車が増えました.タンデム楽しいです. FOAF, RDF, Semantic Web, Cycling, Folding Bike, Recumbent, Tandem, BD-1, Birdy, Brompton, Sat R Day, Bike Friday, ViewPoint, Greenspeed, Trike, GPS, Optics, Astronomy, Macintosh, Kawasaki, Kanagawa, Japan