The top layer or course of a masonry wall, usually having a slanting upper surface to shed water;

瓦墙的顶层或顶部结构，通常有倾斜的上表面以便排水；

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The top layer or course of a masonry wall, usually having a slanting upper surface to shed water;

瓦墙的顶层或顶部结构，通常有倾斜的上表面以便排水；

youdao