Yeah, but the challenging thing is that we are talking about tropical species.

是的，但具有挑战性的是我们正在谈论热带物种。

Another widespread belief Dr Dale and his colleagues confirmed is that tropical species are more colourful than those from temperate climes.

戴尔博士和同事证实的另一个普遍的观点是，热带气候里的物种比温带的更鲜艳。

Maybe you've never heard of the gutta percha, a tropical tree species that provided the sap used to make gutty balls.

也许你从未听说过 gutta percha ，这是一种热带树种，它的汁液可以用来制作 gutty 球。

The tropical species is prettier than the native ones, which is why many people prefer to plant it. But there's still time to change that.

就乳草来说，热带品种比本地品种更漂亮，这就是许多人更喜欢种植热带品种的原因。但是现在改变这种情况还来得及。