隧道是指在既有的建築或土石結構中挖出來的通道，供交通立體化、穿山越嶺、地下通道、越江、過海、管道運輸、電纜地下化、水利工程等使用。隧道不一定全是地下通道，僅位於地面下稱作地下隧道或地下道路。主體建築物由洞身和洞門組成，附屬設備包括避車洞、消防設施、應急通訊和防排水設施，長大隧道還有專門的通風和照明設備。隧道大部分的功能，為提供行人、腳踏車（自行車）、一般道路交通、機動車、鐵路交通、或運河使用，而部分隧道只負責水、石油的管道運輸或其他特定服務，包括軍事及商業物流等。
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!
Preparing download link, please wait for seconds
Almost done...
Click to download
Error getting file. Please try again
