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1·Though scientists have tried to make inroads on this uncharted continent, mysteries remain about its topography.

虽然科学家曾试图侵占这一不明了的领域，其剖析图依然神秘。

2·It is supplying part of the avionics on the Comac C919 airliner through a joint venture with AVIC Systems and plans to make further inroads in that area.

通用以同中航系统建立合资公司的形式参与C919项目的部分航电设备的供应并计划在该领域进一步合作。

3·CNPC, which had already worked on smaller projects in Libya like pipeline construction and provided oilfield exploration services, was looking to make deeper inroads into the country.

中石油之前在利比亚做过管道建设之类的一些小项目，并提供油田勘探服务。它本来是想在利比亚进一步拓展。

4·He has been instrumental in helping us make inroads since we landed on you soil.

自从我们降落，他有效地协助了我们做侵入。