1.Mike Shatzkin, a publishing consultant, estimates e-books could be 20% to 25% of total unit sales by the end of 2012.
据出版业顾问肖特金（MikeShatzkin）估计，到2012年底，电子书的销量将占到20%至25%。
2.is a total unit, harmonious unit.
是一个完整的单位，和谐的单位。
3.My kitchen is a total unit, so Xia Bi Ha almost can not find a shelter and is exposed in front of us.
我家是整体厨房，狭必哈几乎找不到藏身之处，只能赤裸裸的暴露在我们面前。