【化】 elementary entity; elementary unit

1. 家庭是社會的基本單位。
   The family is the basic unit of society.
2. 一種基本單位或基礎單位，常常指機器指令的最低一級或語言翻譯的最低的單位。
   A basic or fundamental unit, often referring to the lowest of a machine instruction or lowest unit of language translation.
3. 絕對零度標定的度量或度量單位的，從長度、質(zhì)量或時間的基本單位而得出
   Relating to measurements or units of measurement derived from fundamental units of length, mass, and time.

基本的英語翻譯：

單位的英語翻譯：