This spring there is supposed to be a cold spell.

据推测那儿今年的春天会很冷。

If one nest proves susceptible to some environmental factor—be it disease, predation, or even a cold snap or wet spell—then it is likely that all the other colonies will share that vulnerability.

如果一个巢穴容易受到某些环境因素的影响——不管是疾病、掠食，亦或是寒流、潮湿期——那么极可能其他的聚居群也有着同样的弱点。

The social scientists ascribe such thinking to the fact that a cold spell or heat wave prompts memories of other similar weather events and thus makes one more or less likely to believe in global warming at that moment.

社会学家们认为此事乃寒期或暖波促进其它同类天气变化事件的存储，并且，因此使人或多或少相信此时此刻全球在变暖。