Trigonometry was one. Chemistry was the other.
三角是一个，化学是另一个。
We may determine the height of a mountain by trigonometry.
我们可用三角原理测定山的高度。
That’s the little bit of trigonometry code at the beginning of the foreach loop.
在foreach 循环的开始有一些三角函数的代码。
That’s the little bit of trigonometry code at the beginning of the foreach loop.
在foreach 循环的开始有一些三角函数的代码。
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