It is the tip of a substantial iceberg.

这只是冰山一角。

But a maternal death is only the tip of the iceberg.

但是孕产期死亡仅仅是冰山的一角。

The sheer size of the icebergs is humbling.

冰山的实际尺寸是令人震撼的。

Close ups of lava are just the tip of the iceberg.

熔岩的特只是冰山一角。

So in a sense it's just the tip of the iceberg.

所以从某种意义上说，这只是冰山一角。

Yet that is still only a flicker of what is possible.

但是，这项术可能有万千功能，以上不过是冰山一角。

Meanwhile, near another iceberg, the female walruses are teaching their pups to swim.

与此同时，在另一座冰山附近，象正在教它们的幼崽游泳。

We have polar bears and a real iceberg too!

我们有北极熊，还有真正的冰山！

But we only see a tiny amount of what's going on on the surface.

但我们看到的只是冰山一角。

The Titanic also hit an iceberg and sank.

泰坦尼克号也撞到冰山并沉没。

You can hear the ice releasing the air bubbles and it sounds like popcorn.

你能听到冰山里面产生气泡的声音，听起来有些像爆米花。

The iceberg filled lagoon manages to reflect the lights in an incredibly beautiful way.

满是冰山的泻湖以一种难以置信的美丽方式反射着光线。

Yes, they're helpful, but really they're just the tip of the iceberg.

是的，它们很有帮助，但实际上它们只是冰山一角。

We really believe that we're only beginning to scratch the surface of what's possible.

我们真的相信我们只看到了可能的冰山一角。

But educational data brokers are really just an example.

但是教育数据经纪人的例子只是冰山一角。

We are just hitting the tip of this iceberg.

我们只是触及了冰山一角。

The growing health concerns were just the tip of the iceberg.

日益增长的健康问题只是冰山一角。

Who knew? Who knew that Iceland was a hedge fund with glaciers?

谁会知道？说会知道冰岛是个覆盖着冰山的避险基金？

And that is just a taste of some of the things in Swift 4.

这些只是 Swift 4 中事物的冰山一角。

The Titanic was the first to sink after famously hitting a huge iceberg in 1912.

1912 年，众所周知，泰坦尼克号撞上了一座巨大的冰山，成为第一艘沉沉没的奥林匹克级邮轮。