Scientists generally measure pressure with the S.I. unit of force: Newtons per area, meters squared, which is shortened to pascals.

科学家们通常用的国际计量单位 来测量压强: 牛顿平方米，简称帕斯卡。

A pascal is the amount of mass something can take per square meter of material.

帕斯卡是每平方米材料可以承受的质量。

And the strongest spider silk in the world has a tensile strength of about four billion pascals.

而世界上最结实的蜘蛛丝的抗拉强度约为四十亿帕斯卡。

STP means standard temperature and pressure, which according to the lords of chemistry is 0 degrees Celsius and 100,000 pascals or 100 kilopascals.

这个 STP 的意思是——标准温度和压力（简称为标准状况），在化学里它的意思是摄氏0度 和 10万帕斯卡 (或者说100千帕斯卡)。

Which means that the pressure at the bottom of the pool is 27,000 Pascals more than the pressure, a quarter of a meter down.

这意味着池底的压力增加了 四分之一米深度处的压力为 27，000 Pa。

But since pascals are so tiny we either use kilopascals or we use the pressure here on earth at sea level, that we call one atmosphere or one atm.

但因为帕斯卡实在太小了，我们要么用千帕斯卡，要么用海平面压力来作为单位，我们称之为 1 个大气压， 或者 1 ATM。

Completely by chance, one atmosphere is equal to 101325 pascals, but that's so close that we often just say that one atmosphere is 100,000 pascals or 100 kilopascals.

纯属巧合，1 大气压 = 101325 帕斯卡，但我们一般取整成1大气压 等于10万帕斯卡， 或者说100千帕斯卡。