Reentrant polygon
凹多边形
🧩 词语组成解析
reentrant
[ri:'entrənt]
n. 再进去，凹角;
adj. 再进去的，凹角的;
polygon
['pɔligən]
n. 多边形，多角形;龟裂状;
🗣️ 情景例句
I've thought about that for some time.
我已经想过一阵子了。
Fools rush in where angels fear to tread.
智者裹足不前，愚者铤而走险。
Several cases have been reported in Russia recently of people who can detect colours with their fingers, and even see through solid and walls.
俄罗斯最近报导了几个事例，有人能用手指看书识字和辨认颜色，甚至能透过厚实的门和墙看到东西。