http://www.youtube.com/watch?v=-9spkB6q4_Y 3:12 whereas Steve Jobs invented something that was sexy and cutting edge, James Dyson reinvented something that we all took for granted.
http://www.youtube.com/watch?v=aTzF1zcdBVM 2:09 so this was an experimental procedure? it was definitely cutting edge. 羊水を生理食塩水で代用するのは新しい方法ですか？一番新しい方法です。
参考リンク
http://bridge-english.blogspot.jp/2013/08/the-thin-end-of-wedge.html the thin end of the wedge
http://www.youtube.com/watch?v=QH0u3M8Apdg 0:44 you couldn't do that with a knife that didn't have a good edge on it. 刃先が鋭くない包丁では不可能な技です。
練習問題解答
a-1714 at the cutting-edge of,
