n. a projecting ridge on a mountain or submerged under water
n. 突出部分, 暗礁, 矿层
1. She stood on the ledge and looked down at the street below.
她站在窗台上，俯视下面的街道。
2. The cat likes to sit on the ledge and watch the birds.
这只猫喜欢坐在窗台上看鸟。
3. Be careful not to lean too far over the ledge.
小心不要过分靠在窗台上。