1550s, "relating to or near the horizon," from French horizontal, from Latin horizontem (see horizon). Meaning "flat" (i.e., "parallel to the horizon") is from 1630s. Related: horizontally.
权威例句
1. The frames are secured by horizontal rails to the back wall.
框架用横杆牢牢固定在后墙上。
2. Do not raise your left arm above the horizontal.
左臂不要举过水平高度。
3. He shifted his position from the horizontal.
他从水平姿势变换成其他姿势。
4. Stand the table on its legs, so that the top is horizontal.
把这桌子立起来, 使桌面成水平状.
5. The character " 王 " is composed of one vertical and three horizontal strokes.