建立专用车道系统需要对现有公路进行更广泛的物理改造，而它又保证了公路车辆通行量能够得到最大程度的提高。
A special purpose lane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway capacity.
原生裂缝是岩浆冷凝结晶过程中形成的裂缝；次生裂缝是火山岩及其原生裂缝系统受后期构造运动、溶蚀、风化等作用改造而形成的裂缝。
Primary fracture were formed during the lava crystal and the secondary fracture generated during the volcanic reconstruction by tectonic movement, and wind action, solution.
在过去50年中，人类对生态系统的改造比历史上的任何时期都更为迅速而广泛。
Over the past 50 years humans had changed ecosystems more rapidly and extensively than any comparable period in human history.
“千禧生态系统评估”的负责人沃尔特·里德说，在过去50年中，人类对生态系统的改造比历史上的任何时期都更为迅速而广泛。
Walter Reid, director of the Millennium Ecosystem Assessment, said over the past 50 years humans had changed ecosystems more rapidly and extensively than any comparable period in human history.
在长征系列发动机主泵试验系统现有的基础上经局部改造而建造了燃料节流阀试验系统。
An engine main pump test system was improved to be both applicable for pump test and fuel throttle valve test.
在车间改造中，去掉了原有的旧砂吸送系统，而导致型砂质量下降。
In renovation of the foundry shop, the original used sand suction system was dismantled, which caused lower quality of the molding sand.
在车间改造中，去掉了原有的旧砂吸送系统，而导致型砂质量下降。
In renovation of the foundry shop, the original used sand suction system was dismantled, which caused lower quality of the molding sand.
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