A canopy is a decorated cover, often made of cloth, which is placed above something such as a bed or a seat.
N-COUNT
华盖状的东西(如树冠)
A canopy is a layer of something that spreads out and covers an area, for example the branches and leaves that spread out at the top of trees in a forest.
例句
The trees formed such a dense canopy that all beneath was a deep carpet of pine-needles.树冠浓密,覆盖着厚厚一层松针。