SSD stands for solid state drive (some people say solid state disk). It is the part of a computer or phone that stores your files and programs — the things that stay there after you switch the power off.

SSD stands for代表的是 solid state drive固態硬碟（some people say solid state disk有些人會說 solid state disk）。It它 is the part of a computer or phone是電腦或手機裡的一個部分 that stores your files and programs用來儲存你的檔案和程式——the things that stay there after you switch the power off也就是關機後還會留在裡面的東西。

What makes it different from the older hard disk drive (HDD) is that nothing inside it moves: an HDD has a spinning metal plate and an arm that swings across it, while an SSD stores everything in memory chips. "Solid state" is just the engineer's way of saying "no moving parts." That is why SSDs are much faster to open files, silent, lighter, and harder to break if you drop the machine — and also why they cost more per amount of storage.

What makes it different from the older hard disk drive (HDD)它跟比較舊的硬碟（HDD）不一樣的地方 is that nothing inside it moves在於裡面沒有任何東西在動：an HDD硬碟 has a spinning metal plate and an arm that swings across it裡面有一片旋轉的金屬碟片和一支會擺動掃過去的手臂，while an SSD而固態硬碟 stores everything in memory chips是把所有東西存在記憶體晶片裡。"Solid state"「固態」 is just the engineer's way of saying "no moving parts."只是工程師用來說「沒有會動的零件」的說法。That這也是為什麼 is why SSDs are much faster to open filesSSD開檔案快很多、silent安靜、lighter比較輕，and harder to break if you drop the machine摔到機器時也比較不容易壞——and also why they cost more per amount of storage也是為什麼它每單位容量比較貴。

Almost every laptop and phone sold now uses one. In everyday speech people just say "my SSD" or even "my drive." It is written in capitals and said letter by letter, ess-ess-dee.

Almost every laptop and phone sold now幾乎現在賣的每一台筆電和手機 uses one都用固態硬碟。In everyday speech平常說話 people just say "my SSD"大家就直接說「我的 SSD」 or even "my drive."甚至說「我的硬碟」。It它 is written in capitals會用大寫寫 and said letter by letter一個字母一個字母唸出來，ess-ess-dee唸成 ess-ess-dee。