Others are barely larger than a grain of sand.

有的仅略大于沙粒。

An oyster can produce a pearl by covering a grain of sand with what substance?

牡蛎可以用什么物质覆盖一粒沙子来制造珍珠？

And we have the tendency of picturing it somewhat like a grain of sand.

我们可能会将它以图片形式呈现，就像对待一粒沙那样。

One of our comrades swallowed a grain of sand that was highly radioactive. He died.

我们一名同志吞下了一些高度放射性的沙子 他死了。

Each time that ticket hits a jackpot throw a grain of sand into the Grand Canyon.

每当那张彩票中了头奖，就往大峡谷里扔一粒沙子。

That entire image is about the size of a grain of sand held at arm's length.

整张照片约为手臂距离远的一粒沙子的大小。

And finally, the phrase a grain of sand describes something which is both insignificant yet somehow important.

最后，短语“一粒沙子”描述的是既微不足道又很重要的事物。

He too was a dot, a grain of sand in the near-blinding dazzle of the unobscured sun.

他也是一个点，一粒沙子，在没有被遮挡的太阳的几乎要闪瞎眼的耀眼光芒下。

When a tiny intruder like a grain of sand enters an oyster it covers it with naker that forms a pearl.

当一个像沙粒一样的微小入侵者进入牡蛎时，牡蛎会被形成珍珠的纳克覆盖。

An atomic nucleus would be the size of a grain of sand you could hold on the tip of your finger.

原子核会像沙粒一样大，让你有办法用指尖顶着。

No more significant than a grain of sand.

不比一粒沙重要。

That speed, a grain of sand could cripple Cassini.

那样的速度，一粒沙子都能摧毁卡西尼号。

Amazingly, a typical meteor that you'll see is due to a meteoroid that's tiny, probably smaller than a grain of sand!

令人惊讶的是，你将可能看到的一颗典型的流星是由一个非常小的流星体形成的，可能比一粒沙子还小！

It's not a grain of sand. It cannot be said to exist even in a certain place at a definite time.

电子不是一粒沙，所以我们不能说电子可以在固定时间出现在某个地方。

It's the mass of a grain of sand.

它是一粒沙子的质量。

So it's a tenth of a grain of sand.

索伦：所以它只是一粒沙子的十分之一。

So like a wait, a millimeter would be like a grain of sand?

索伦：所以就像等待一样，一毫米就像一粒沙子？

Often used in chemical weapons, a lethal dose amounts to just 11 milligrams, or about the size of a grain of sand.

通常用于制备化学武器，仅 11 毫克就可致死，大概一粒沙子大小。

You know, for me a particle, oh, it looks like a grain of sand.

你知道，对我来说是一个粒子，哦，它看起来像一粒沙子。

And we can't see if there's a grain of sand because it's under the bottle.

我们看不到是否有一粒沙子，因为它在瓶子下面。