shorthand

1. N-UNCOUNT Shorthand is a quick way of writing and uses signs to represent words or syllables. Shorthand is sometimes used by secretaries and journalists to write down what someone is saying. 速記法

Ben took notes in shorthand. 本用速記法記筆記。

2. N-UNCOUNT You can use shorthand to mean a quick or simple way of referring to something. 簡約表達法[also 'a' N]

Laslett uses the shorthand of "second age" for the group of younger people who are creating families. 拉斯萊特用“第二代”來簡單指稱那些更年輕、正在組建家庭的人。