Though scientists have tried to makeinroadson 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.