The per walls' water-tightness performance is more reliable, compared to the single-line barrier walls, the drained cavity walls, and the simple rain-screen walls.

等压雨幕墙在雨水防渗方面的表现相比单层墙、排水夹空墙或简单雨幕墙更为可靠。

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Great ideas can come from anywhere; often the biggest barrier to getting it over the goal line is knowing what to do next.

伟大的创意可能随时随地涌现，使其最终获得成功的最大障碍往往是：不知道下一步该干什么。

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But the lanes are protected from motor vehicles by a line of white paint-a largely metaphorical barrier that many drivers ignore and police do not vigorously enforce.

通道上的一条白色油漆线保护了自行车不被机动车撞到，但这条线在很大程度上只起着象征意义，因为许多司机根本不在乎这条线并且警察也不严格执行保护自行车的措施。

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The 10th-seeded Argentine kicked the small barrier surrounding the line judge in anger after dropping his serve to Marin Cilic at 3-3 in the second set.

WSJ: Nalbandian Disqualified for Injuring Linesman

Those include a pilot program to test the use of platform barrier doors on the L subway line, and a vow to explore the installation of an automated warning system that would alert train controllers when a person is on the tracks.

WSJ: New York Subway Deaths Remain Rare

We've already seen 220 miles worth of levees and flood walls repaired, and we are working to strengthen the wetlands and barrier islands that are the first line of defense for the Gulf Coast. (Applause.) This isn't just critical to this region's physical protection, it's critical to our environment, it's critical to our economy.

WHITEHOUSE: President Obama Holds Town Hall in New Orleans