grand piano / upright piano

grand piano
a large piano in which the strings are horizontal

平臺型鋼琴；大鋼琴


http://oaadonline.oxfordlearnersdictionaries.com/dictionary/grand+piano
http://tw.dictionary.yahoo.com/dictionary?p=grand



http://commons.wikimedia.org/wiki/File:Yamaha_grand_piano,_Piano_Recital_2012.jpg




upright piano
a piano in which the strings are vertical

豎型鋼琴

http://oaadonline.oxfordlearnersdictionaries.com/dictionary/upright-piano
http://tw.dictionary.yahoo.com/dictionary?p=upright+piano



http://www.pianomanusa.com/upright-pianos/