concave造句
The cloven hooves are sharp edged , elastic and
concave.
蹄锋利,呈凹形, 富有弹性.
In adults its contour may be straight, slightly
concave or slightly convex.
成人肺其形状可以是直的, 轻微凹下或轻度突出.
concave lens
凹透镜
The palm of one's hand is slightly
concave.
人的手掌是微凹的.
concave mirror
凹面镜
...the
concave bottom of an empty hair spray container.
空喷发胶罐凹进去的罐底
...a
concave stomach.
凹陷的腹部