Oved teacher , you are the spring shower that moistens our hearts .
亲爱的老师，您就象那春天的细雨，滋润著我们的心田。
To test whether religion might have emerged as a way of improving group co-operation while reducing the need to keep an eye out for free-riders , dr sosis drew on a catalogue of 19th-century american communes published in 1988 by yaacov oved of tel aviv university .
