On half of the trials, however, these were samples of the non-chosen jam or tea.
然而，在一半的试验中，这些是未被选择的果酱或茶的样本。
2
Across 18 trials each, the living rats were 52 percent more likely on average to set the social robot free than the asocial one.
在每组18次试验中，平均而言，活着的老鼠释放社交机器人的可能性比非社交机器人高52%。
3
Next the researcher introduced a third option, a third paddle that would initiate a new trial, giving the dolphin the choice of passing on difficult trials.