He notes that while most of the world's species live in the tropics their risk is underestimated because only a sliver of data from those regions exists.

他留意到，尽管全世界大多数种群生活在热带地区，它们的生存风险却被低估了，因为目前该地区的数据只有很少的一部分。

The size of the cold-blooded Titanoboa indicated to researchers that the tropical coastal river system it occupied would have been warmer than the tropics today.

冷血的泰坦蛇的大小向研究人员表明这种蛇生活的沿海河流水系的热带环境比现在的热带地区更加温暖。

Australia had a racially segregated Labour policy, whereby non-white worked in conditions that would (or could) not be tolerated by whites - e.g. hard Labour in the tropics and pearl diving.

澳大利亚曾经有过种族隔离的劳工政策，即非白人种将(或可能)是在不被白人默认的条件下工作的，例如在热带地区与珍珠捕捞业工作的苦役。

What is it about the tropics that so fosters biodiversity?

是什么让热带地区的生物物种这么繁多呢？

They are giant machines, picking up huge amounts of moisture and energy transporting it from the tropics sometimes as far north as the Arctic circle.

它们是巨大的机械装置，带起了巨量的水气和能量，并从热带地区开始输送水气和能量，有时最北可至北极圈。

Since then, a few other teams have found more evidence that the tropics are both a cradle and a museum of biodiversity.

这之后，另外几个研究小组找到了更多的证据证实了热带地区既是生物进化的摇篮还是保存生物物种多样性的博物馆。

Meanwhile, NOAA is expected to announce possible record highs in the tropics when it releases its final report on 2009 temperatures on Friday.

同时，NOAA在周五发布2009年温度的最后报告时，人们也希望它能够公布热带地区可能的最高温度。

In northern climes some land will become more suitable for farming as springs come sooner, whereas in the tropics and subtropics some marginal land will become barely inhabitable.

在南方气候的作用下，随着春天的提早到来，一些土地变得更适宜耕种；而在一些热带和亚热带地区，一些边际土地勉强适合人类居住。

The one they favoured is that the higher temperature of the tropics means that chemical reactions happen faster and metabolic rates are therefore higher.

而他们所推崇的一种假说认为热带地区的温度更高意味着化学反应发生的速度更快，因此生物代谢的速率也更快。

In the tropics numerous glaciers have disappeared altogether.

热带地区大量的冰川已经一起消失。