求翻译：目前我国大型河流的穿越技术逐渐由开挖敷设向非开挖敷设发展，其中定向穿越和隧道穿越是最为常用的两种施工技术。是什么意思？

China's large rivers across the technology gradually laid by the excavation to trenchless laying of development, which directed through the two construction technology is the most commonly used and tunnel crossing.

At present, China's large rivers through the Technology gradually laid by digging up to non-dug underground development, directed through the tunnel and is the most commonly used across the two construction technology.

At present our country large-scale rivers traversing technology by excavates the placing to must to excavate the placing development, in which direction detection traversing and the tunnel traversing is gradually the most commonly used two kind of construction technology.

China's large rivers passing through gradually to trenchless laying of trenchless technology development, directional crossing and tunnel construction technology for two of the most commonly used.

正在翻译，请等待...