The concrete wall that used to divide this city has now all but gone.

这堵曾经被用来分隔这座城市的水泥墙现在差不多不存在了。

《柯林斯英汉双解大词典》

A forty-foot-high concrete wall encircles the jail.

一道40英尺高的水泥墙环绕着该监狱。

《柯林斯英汉双解大词典》

Texture like grass sheets on a wall, or white pebbles embedded in a concrete wall gives a three dimensional look to the wall and a few of shades of its colors.

像草铺在墙上或白色的鹅卵石嵌在水泥墙上这样的纹理可以让墙体有三位效果和一些颜色的渐变。

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ConEd officials Tuesday showed a 5-foot tall concrete wall now standing in front of a structure that housed signal equipment, which was flooded during the storm.

WSJ: ConEd Storm Plan to Cost $1 Billion

Back when he was just a contractor in Saudi Arabia, he is said to have impressed impatient royal clients by wheeling in giant jet engines to blow-dry a concrete wall.

ECONOMIST: For now, at least

But GFP is a concrete wall of a molecule--it curves around itself such that there is no place for an enzyme to bind.

FORBES: Research