发布于:2025-07-06 05:31浏览量:89文/优校网
1.【建】基石,基本;踏板;楣,门槛,窗台
2.【机】(车体底框的)梁
3.【地】岩床,岩层,海底山脊;平巷底,矿山巷道的底面;底粱
1.a narrow shelf at the bottom of a window in a house or building
2.the area on the outside of a car that is directly below the door