N a thin flat piece of plastic, metal, etc, in the shape of a right-angled triangle, used in technical drawing 三角板
Cut the circular cake in half and set each semicircle against adjoining sides of the square to form the top of the heart.
把圆形蛋糕切成两半,把每个半圆放在正方形的两边,形成心形的顶部。
The tiny island nation has set aside 500,000 square kilometres—80 percent—of its maritime territory, for full protection.
这个小小的岛国已经留出了占其海洋领土80%的50万平方公里用于全面保护。
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