The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls.
弯月面容器中之静止液体的弯曲上表面,如果液体浸润了容器壁,那么弯曲面呈凹状。
2
If the universe's space-time is positively curved, like the surface of a sphere, parallel beams would come together.
如果宇宙的时空像球体表面一样正向弯曲,平行的光线就会交合在一起。
3
Maps (on paper or on the screen) are flat surfaces; they require a transformation from the curvedsurface of the earth to the flat plane: a map projection.