late 13c., "crossbar on a door," perhaps from Middle English verb leggen "to place, lay" (see lay (v.)). Sense of "narrow shelf" is first recorded 1550s; "shelf-like projection of rock" is from 1550s.
例文
1. She had climbed onto the ledge outside his window.
彼女は彼の窓の外の窓の台に登った。
2.I managed to pull myself up onto a wet,sloping ledge .
私はやっと湿った傾斜の暗礁に登った。
3.I balanced on the ledge .
私は窓際でしっかり立っています。/
4.The phone was perched precariously on the window ledge .
電話が窓の上に置かれ、揺れている。
5.How can such a large quantity of know- ledge be acquired?