音標(biāo)發(fā)音英式音標(biāo) [?pi?.di??ef]美式音標(biāo) [?pi?.di??ef]英式發(fā)音 美式發(fā)音 基本解釋abbr.可移植文檔格式(=portable document format)同根派生 PDF相關(guān)詞英漢例句Includes product data sheets in pdf format. 包括公司和服務(wù)資料。Choose Edit Menu from the PDF pop-up menu. 從PDF彈出式菜單中選取“編輯菜單”。You need Adobe Reader software to open PDF file. 你需要Adobe Reader軟件來打開PDF文件。One of the best PDF creation tools. 量創(chuàng)建PDF文件的最好工具。You can download the sample PDF here for reference. 你可按這裡下載pdf電樣本作蓡考。PDF更多例句英英字典劍橋英英字典 abbreviation for portable document format: a system for storing and sending documents between computers that does not allow the contents to be changed, or a document created using this systemPDF劍橋字典PDF柯林斯字典