You measured the diameter of his suspicious mole yesterday.

你昨天还测量了他可疑痣的直。

It's about tens of meters in diameter.

它的直大概有几十米。

Meanwhile, axons with larger diameters offer less internal resistance.

同时，直较长的轴突拥有较小的内部阻力。

It's also the ratio of a circle's circumference divided by its diameter.

它也是圆周长除以直的比率。

Number four, the meteor was blank meters in diameter.

第四题，陨石的直有多少米。

It is used for the ratio of the circumference of a circle to its diameter.

pi代表着圆周到直的比例。

The diameter of the Earth is about 13,000 km.

【diameter】地球的直约为13,000公里。

They're up to 8.4 meters in diameter.

它们的直达到8.4米。

A meteor that scientists say was probably a few meters across.

科学家说这颗流星的直可能只有几米。

The Observable Universe is 93 billion lightyears in diameter.

可观测宇宙的直为930亿光年。

It's about 12,700 km in diameter; about 7.7 million times larger than you.

它的直约为12700公里;大约比你大770万倍。

The asteroid they're one is just over a half a mile wide.

它们登陆的小行星的直大约只有二分之一英里。

Typically, supermarkets demand that onions are about two to two-and-a-quarter inches in diameter.

通常超市会要求洋葱的直达到2-2.75英寸。

This is an animal with a footprint three feet in diameter.

这只动物的足迹直为三英尺。

Now, I have very thin hair, so my hair is approximately 40,000 nanometers in diameter.

我的头发很细，它的直差不多是四万纳米。

Each one of these tiny circles is an irrigated field half a mile in diameter.

每一个小圆圈都是直半英里的灌溉田。

Luna's diameter is roughly one quarter the size of Earth, measuring 2,160 miles.

月球的直大约为地球的四分之一，2160英里。

" N95" means they block at least 95% of particles smaller than 0.3 microns across.

N95意味着它们至少能阻挡95%直小于0.3微米的粒子。

It's the earthly distance-limit, though we normally call it the diameter of the earth.

这是地球上距离的极限了，我们通常称之为地球的直。

The entire star, which is only about 10 miles across, is actually that density.

而整个恒星的直又只有10英里左右，事实上，中子星的密度就是这样。