1. 建筑物外部包括天沟：gutter 排水沟 | guttering (建筑物外部包括天沟 | guy line 钢缆

2. 开沟法：gutteral /机载干扰台侦察器/ | guttering /开沟法/ | guttersnipe /广告用小招贴/

3. 深蝕：gust velocity 陣風速度 | guttering 深蝕 | gyration 迴轉

4. 檐槽：guss concrete || 流态混凝土 | guttering || 檐槽 | gypsum mold || 石膏铸模

1. （建筑物的）排水系统
    Guttering consists of the plastic or metal channels fixed to the lower edge of the roof of a building, which rain water drains into.