帮我翻译下。
One study,conducted in Kyoto,Japan,observed six chimps in captivity.Chimps were shown videos of other chimps yawning ,along with chimps that opened their mouths but did not yawn.of the six,two chimps yawned contagiously a number of times.Even more interesting,like their human counterparts under age 5,the three chimp infants showed no susceptibility to contagious yawning.