We need those long-term datasets to support conservation action, and I told you tapirs are very hard to study, so we have to rely on indirect methods to study them.
我们需要长期的数据集， 来支援动物的保护行动， 而且我说过，貘是很难研究的， 所以，我们必须依赖 间接的方法来研究它们。