A micrometer is one millionth of a meter.

1微米是百万分之一米。

You want to change its speed a 10 millionth of its total.

你想改变的是它总速度的一百万分之一。

In those days, radioactivity is measured in units called roentgens. Normal atmospheric level is about 12 millionths of a roentgen.

当时放射性的测量单位称为伦琴 正常大气中的放射量是0000012伦琴。

Every 1.5 millionths of a second the Sun releases more energy than all humans consume in an entire year.

太阳每一百五十万分之一秒释放的能量比人类一整年消耗的能量还要多。

Let's jump all the way back to my 120 millionth great-grandparent, this is 12 kilometers back down the line.

跳到1亿两千万前的祖先，沿这条线往前走 12公里。

That distance is so small, that sound reaches one ear just four millionths of a second before arriving at the other.

距离很近，这样听力达到一只耳朵的4毫秒后就传入另一只耳朵。

Spare me the apology for butting into my life for the millionth time.

如果是为了多次插手我的生活来道歉，就免了吧。

Last week, we were able to celebrate the one millionth broadband connection in the UK.

上周我们庆祝英国宽带连接突破一百万。

This is the nine millionth ring store, and I can't find the perfect ring.

一无所获 逛了几百家店 还是找不到完美的戒指。

You know... for the millionth time, I had no idea what he was up to!

你知道吗...我重复了一百次 我真的不知道他的意图!

If it's one millionth of one percent, that's like a nuclear bomb exploding behind him.

如果是百分之一的百万分之一，那就像一颗核弹在他身后爆炸一样。

My 165 millionth great-grandparent is not even a mammal, it's a prehistoric lizard that predates even the dinosaurs.

我16亿5千万代前的祖先连哺乳动物都不是，它是比恐龙还古老的史前蜥蜴。

CEO Elon Musk tweeted his congratulations as the one millionth car rolled off the production line at Giga Shanghai.

当第一百万辆汽车在上海“Giga”工厂下线时，首席执行官埃隆·马斯克在推特上发文祝贺。

Each of the portraits must be tiny—about 12 millionths of a metre across.

每幅肖像都必须很小——大约只有百万分之十二米。

Visible light has a wavelength of between only forty and eighty millionths of a centimeter.

可见光的波长只有百万分之四十到八十厘米。

Not by a whole lot: just a few millionths of a meter.

不是很多：只有百万分之几米。

And each strand of silk is made up of thousands of nano-strands which are 10-20 millionths of a millimeter in diameter (0.004-0.008 in) .

而每一缕蛛丝都由数千根纳米丝组成，这些纳米丝的直径为是一毫米的十万分之一到二十万分之一（0.004 — 0.008英寸）。

For the millionth and billionth time.

百万次和十亿次。

The dust would be made of tiny metallic rods each around nine millionths of a metre long.

这些尘埃由微小的金属棒构成，每根金属棒的长度约为百万分之九米。

That's a twelfth of a foot, or a little more than a millionth part of a mile.

那是十二分之一英尺， 或一英里的百万分之一多一点。