concave
Definition
Curved inward, like the inside of a bowl or sphere.
中文 向内弯曲,如碗或球体的内侧。
Example
"The mirror has a concave surface that magnifies reflected images."
Curved inward, like the inside of a bowl or sphere.
中文 向内弯曲,如碗或球体的内侧。
"The mirror has a concave surface that magnifies reflected images."