Stuart McGill, professor of spine biomechanics at the University of Waterloo in Canada has been studying sit-ups for years and is convinced that the traditional crunch does indeed cause us harm.
加拿大滑铁卢大学的生物力学脊柱教授斯图尔特·麦吉尔对仰卧起坐已经研究多年，深信这一传统的收腹运动确实会有损我们的身体。
Third, the financial system (specifically, traditional commercial banks) is severely damaged, and the credit crunch will thus not ease very fast.
第三，金融体系，尤其是传统的商业银行遭到严重损害，因此信贷紧缩不会很容易被缓解。
"I really believe that the traditional, antiquated crunch has seen better days, and it's time to make a change," said Tony Horton, the creator of the popular P90X workout series.
P 90 X系列健身法的创始人托尼•荷顿说：“我相信传统、过时的卷腹运动曾风靡一时，但现在是时候改改了。”
"I really believe that the traditional, antiquated crunch has seen better days, and it's time to make a change," said Tony Horton, the creator of the popular P90X workout series.
P 90 X系列健身法的创始人托尼•荷顿说：“我相信传统、过时的卷腹运动曾风靡一时，但现在是时候改改了。”
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