A shadowy place is dark or full of shadows.
I watched him from a shadowy corner.
我在一个阴暗的角落观察他。
A shadowy figure or shape is someone or something that you can hardly see because they are in a dark place.
a tall, shadowy figure silhouetted against the pale wall.
映在灰白色墙上的一个高大而模糊的人影。
You describe activities and people as shadowy when very little is known about them.
the shadowy world of spies.
神秘的间谍世界。