"The economic crisis has been affecting the labor, has been affecting the students, has been affecting office,white collar,the blue collar - the people are not going to be patient considering the situation right now;

VOA: standard.2009.03.09

So, imagine the pig has a heavy collar and to reward the pig for walking forward you might remove the heavy collar.

所以，想象这头猪带着很重的项圈,作为对这头猪向前走的奖励,你可以把项圈拿掉。

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But finally,there was a significant difference on alcoholism, the number of people who became how many people were able to getting to do "the white collar" jobs.

酗酒方面两组有显著差异，酗酒人数有差异,成为白领的人数,两组有差异。

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