Sim
abbr. 用户身份识别卡（subscriber identity module）；工业管理学院（School of Industrial Management）；科学仪表舱（Scientific Instrument Module）；模拟计算机索引法（Simulated Machine Indexing）
🗣️ 情景例句
He cancelled his appointment.
他取消约会了。
Was I supposed to help you today?
今天我想帮你忙。
A lot of things can change over twenty-one years.
21年了，许多东西都可能改变的。