华盛顿州鲜为人知的尔瓦河将在三年之后通畅无阻。
The little-known Elwha River in Washington State is set to be free flowing within 3 years.
用高压空气检查试验烟火探测器、报警器及各舱二氧化碳管路系统，使之通畅无阻；
Smoke detectors, alarm carbon dioxide pipeline system and the holds so open with;
停车场南面设置了一座回转高架桥，形成航站楼主楼南北通畅无阻的两个环型路网，提高了航站楼的交通疏导能力。
A circular over bridge is to be built south of the parking lot, forming two circular road network north and south of the main building.
停车场南面设置了一座回转高架桥，形成航站楼主楼南北通畅无阻的两个环型路网，提高了航站楼的交通疏导能力。
A circular over bridge is to be built south of the parking lot, forming two circular road network north and south of the main building.
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