According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum.

根据昆虫学家的说法，单个的蝗虫是安静的生物，但是当它们和同类的其他蝗虫放在一起时，它们会变得兴奋，变色，振动，甚至嗡嗡叫。

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Neven is excited about the potential to enable the system to identify which species of tree a leaf fell from, or the model of car parked on the street.

乃文对于让系统认出一些的东西的前景很激动，比方说认出一片落叶来自哪个树种，或者停在路边的车辆的牌子。

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They are probably excited about the arrival of certain species of fish but spring generates an excitement for us human beings as well, "he says."

他们很可能是由于某些鱼类的到来而表现兴奋，但春天同样也令我们人类产生兴奋。

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