According to Carol Sansone, Ph. D., a psychology professor at the University of Utah, one type of reinforcement must be present for self-change, two would be better than one, and three would be best.

犹他大学的心理学教授，卡罗尔·桑松尼博士说：对个人的改变来说，一种强化是必须的、两种类型的强化就更好了，如果有三种那就再好不过了。

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PC board modify fluid is a kind of colorless lit liquid, ph neutral, non-toxic, but has an impact type smell.

pc板修改液是一种无色通明的液体，酸碱中性，无毒，但有影响型的气味。

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Analyzing the organic matter, Nitrogen, Phosphorus, Fast working Kalium, Fast working Phosphorous, total salt quantity and ph value of the main type of soil in Linze county.

对临泽县主要土壤类型的有机质、全氮、全磷、速效钾、速效磷、全盐量、ph值进行了化验分析。

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Fred Lappe(ph) has been running this type of auction for nearly 20 years, and he methodically reads off the Chicagoan suburban properties the courts have ruled must now be sold.

NPR: Housing Auctions Surge as Foreclosures Mount