ISBN 978-7-100-06681-5. Wiese, Richard. The phonology of /r/. T Alan Hall (编). DistinctiveFeature Theory. Berlin: Mouton de Gruyter. 2001. ISBN 3-11-017033-7. 日化元音
Speaking of keyboards, the keyboards on both the Y510 and the Y710 have a distinctive "ThinkPad feel" when typing ... despite the loss of the iconic red trackpoint