First, create a square surface and then extrude it a little to create a cube.

首先，画一个正方形平面，通过挤压操作来创建一个长方体。

youdao

These maps show the location and relative density of mangroves, which cover roughly 137,760 square kilometers (53,190 square miles) of Earth’s surface.

这些地图显示了红树林的位置和相对分布密度，它们大约占据地球表面的137,760平方千米（53,190平方英里）。

youdao

These maps show the location and relative density of mangroves, which cover roughly 137,760 square kilometers (53,190 square miles) of Earth's surface.

这些地图显示了红树林的位置和相对分布密度，它们大约占据地球表面的137,760平方千米(53,190平方英里)。

youdao

The surface of his painting, "Blue Square." is covered in extremely thick blue paint which he applied using his fingers.

VOA: special.2010.07.09

It has a surface area of almost twenty thousand square kilometers.

VOA: special.2009.08.19

The size it really is, all 510 million square kilometers of its surface.

FORBES: Kucinich vs. The Olive Pit in a World of Injustice

European Union guidelines say that earrings are supposed to contain less than 0.05% nickel by weight and should not release more than 0.5 micrograms of the metal per square centimetre of their surface area per week.

BBC: Earring

As shards and projectiles began rising toward the surface of my square, I grew tense with anticipation.

NEWYORKER: Archeology