This is a letter, or more correctly, an invitation letter. 這是一封信，說得更正確些，是一封邀請信。
A combination of two or more elements or parts. 複合物由兩種或多種元素或部分構成的混合物
Pupils with 90% or more are awarded Grade A. 滿90分的學生評為甲等。
A computer operation, similar to switching, where a selection is made between two or more possible courses of action depending upon some related fact or condition. 一種類似於開關的計算機操作。根據有關的事實或條件，對兩個或更多可能的操作路徑進行選擇。
Data that describes the significant characteristics of a user, a group of users, or one or more computer resources. 描述一個用戶、一組用戶或一至多個計算機資源重要特徵的數據。
