其他的则需要更多的思考：它们的意思与现代意义略有不同。

Others require more thinking: their meanings are slightly different from the modern ones.

youdao

然而，在警觉行为不针对捕食者的情况下，则需要不同的解释。

However, a different explanation is necessary in cases where the vigilant behavior is not directed at predators.

youdao

当然，有些动物物种需要大面积的栖息地，有些则需要长途迁徙。

There are, of course, animal species that require large areas of habitat, and some migrate over very long distances.

youdao