At the start of the study, all of the students were smoking at least half a pack a day during the week and more over the weekends, and wanted to quit. 研究初期,所有的学生一周内每天都最少吸半包烟,周末吸的会更多,他们都希望戒除烟瘾。
'Thanks, Ernie,'I said, and slipped him half a pack of Camels. “多谢!”我说,偷偷递给他半包骆驼牌香烟。
Former smokers, or those who smoked less than half a pack per day, did not appear to be at increased risk. 曾吸烟的人或者每天吸烟低于半包的人看起来不处于增加的风险中。
The history of China in the last half of the20th century has provided a whole pack of vivid and convincing experiences, both of successes and failures, in that consideration. 在此方面,20世纪后半叶中国的历史已经提供了一系列生动可信的成功与失败的经验。
Hygiene is preserved, as the product does not have to be touched and remains covered with the remaining half of the pack. 生保留,因为产品没有被感动,仍然同其余一半的包内。