I contemplated the startling turn of events.

我回想着事情出人意料。

And then some remarkable changes took place.

跟着有些令人惊出现.

The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past.

这个概念就是说人们已经很难观察得到大范围海洋中发生，因为他们只是回顾从过去以来相对短时间。

Compared with urban transportation, rural transportation has experienced even bigger changes.

和城市交通相比，农村交通更是发生了翻天覆地。

But the farther we journey from our tropical origins, the more variation we see.

但是，我们离带起点越远，我们看到就越多。

Technology is now changing faster than most people can keep pace with.

技术现在速度超过了大多数人脚步。

We see polar bears as a sentinel of climate change.

“我们将北极熊看作气候哨兵。

The World Meteorological Organization says the rising temperatures bear the hallmark of climate change.

世界气象组织表示 气温上升是气候标志。

Variable costs change with the amount produced.

可成本随生产数量而。

Shifting winds have made the operation trickier on already difficult terrain.

风向再加上复杂地形，使得灭火工作更加棘手。

We need more celebrations like the one we hold today, with more proud families and happy graduates ready to go out and make a positive difference in the world.

我们需要更多像今天这样庆祝活动，需要更多自信和快乐毕业生，为世界带来积极。

They also discussed how to tackle climate change.

他们还讨论了应对气候方式。

Her graceful ageing on our coinage has been delicately done.

女王随着硬币而优雅老。

So the political landscape has profoundly shifted.

因此，政治格局已经发生了深刻。

Greta Thunberg and other young protesters brought signs calling for action to mitigate climate change.

格里塔·桑伯格和其他年轻抗议者带来了呼吁采取行动缓解气候标语。

Not everyone will successfully navigate the shifting jobs market.

并非每个人都能成功应付正在就业市场。

Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time.

他们方法不是为了试图估算特定区域海洋中实际动物总数（活着生物总数），而是研究单位面积中海洋生物数量。

At the same time, the city underwent dramatic demographic shifts.

与此同时，这座城市也经历了巨大人口。

Newton's First Law of Motion deals with inertia, which is the resistance to a change in its state of motion.

牛顿第一运动定律，即惯性定律，就是阻止运动状态发生力。

Significant changes are being made in the Middle Eastern country.

这个中东国家正在发生着翻天覆地。