This is a letter, or more correctly, an invitation letter. 這是一封信，說(shuō)得更正確些，是一封邀請信。
A combination of two or more elements or parts. 復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(mǎn)90分的學(xué)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(lèi)似于開(kāi)關(guān)的計算機操作。根據有關(guān)的事實(shí)或條件，對兩個(gè)或更多可能的操作路徑進(jìn)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(gè)用戶(hù)、一組用戶(hù)或一至多個(gè)計算機資源重要特征的數據。
