extensions 是 extension 的复数extensionKK [ɪkˋstɛnʃən] /ɪkˈstɛnʃən/发音名词1延期、延长She asked her professor for a two-week extension on the essay.她向教授申请报告延期两周。2分机Call the main number and ask for extension 305.打总机再转分机三〇五。3增建、扩建They built a glass extension at the back of the house.他们在房子后面增建了一间玻璃屋。4扩展、延伸、扩大The new policy is an extension of last year's reforms.新政策是去年改革的延伸。5副档名电脑Save the file with a .txt extension.存档时请用 .txt 这个副档名。6扩充功能、外挂电脑This browser extension blocks ads automatically.这个浏览器扩充功能会自动挡广告。7接发常用复数She got hair extensions before the wedding.她在婚礼前去接了头发。8延长线英式Plug the lamp into the extension by the door.把台灯插到门边的延长线上。9推广教育、进修部He teaches a photography course in the university extension program.他在大学推广教育开了一门摄影课。10伸展、伸直Full extension of the knee may take weeks after surgery.术后膝盖要完全伸直可能得花上好几周。用这个字练口说→相关片语by extension