We may determine the height of a mountain by trigonometry.

我们可用三原理测定山高度。

If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.

如果你想成为手工艺人、缝纫工、造型工或制模工，你需要和几何，甚至三学。

In a week, arrive from long triangle bead trigonometry, go to Beijing again, many China's famous entrepreneur expresses to assentation to Ma Yun's appeal.

一周之内，从长三三，再北京，多位中国闻名企业家对马云呼吁表示附和。