noun🔗Share干线，主力航线 An airline's main operating unit, as opposed to codeshares or regional subsidiaries.""Although smaller regional airlines operate flights for United, the mainline handles the major routes and international destinations." "虽然一些规模较小的区域航空公司为美联航运营航班，但其干线部门负责主要的航线和国际目的地。industrybusinessvehicleChat with AIVocabulary GamePractice Reading
noun🔗Share主线，干线 The main repository for a software project, from which different versions (forks) may be split off."After some experimentation with a new user interface, the developers merged their changes back into the mainline of the software project. "在对新的用户界面进行了一些实验之后，开发者们将他们的修改合并回了软件项目的主线代码。computingtechnologyinternetChat with AIVocabulary GamePractice Reading
verb🔗Share静脉注射，直接注射 To inject (a drug) directly into a vein."The addict chose to mainline the heroin rather than smoke it. "那个瘾君子选择静脉注射海洛因，而不是抽它。medicinesubstancebodyactionChat with AIVocabulary GamePractice Reading
verb🔗Share合并到主线，纳入主干。 To integrate (code, etc.) into the main repository for a software project, rather than separate forks."After testing the new feature thoroughly, the developer will mainline the code into the project's main repository. "在对新功能进行彻底测试后，开发者会将代码合并到主线，纳入项目的主干代码库。computingtechnicalinternettechnologyworkChat with AIVocabulary GamePractice Reading
adjective🔗Share主流的，主要的。 Normal, principal or standard.""The mainline internet connection is much faster than the wireless one." "主要的网络连接比无线网络快得多。stylelanguagecommunicationChat with AIVocabulary GamePractice Reading
adjective🔗Share干线的，主要的 Of or pertaining to the principal route or line of a railway."The express train always uses the mainline track to avoid delays. "这趟快车总是使用主要干线轨道，以避免延误。technicalvehicleChat with AIVocabulary GamePractice Reading
adjective🔗Share干线的，主要的 Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one."The slower train operates on the mainline railway, stopping at more rural stations than the express service. "这趟慢车行驶在干线铁路上，比特快列车停靠更多的乡村小站。vehicletrafficsystemChat with AIVocabulary GamePractice Reading
