3 sentences

1. 您需要了解绘图的基础知识。

   nín xū​yào liǎo​jiě huì​tú de jī​chǔ zhī​shi.

   You need to understand the basics of drawing.

   Source: CCMatrix

2. 我需要绘图计算器或特殊数学软件吗？

   wǒ xū​yào huì​tú jì​suàn​qì huò tè​shū shù​xué ruǎn​jiàn ma?

   Do I need a graphing calculator or special mathematical software?

   Source: CCMatrix

3. 虽然不是功能最全的绘图应用程序，但Notes并不算太糟糕。

   suī​rán bù​shì gōng​néng zuì quán de huì​tú yìng​yòng​chéng​xù, dànNotes bìng​bù suàn tài zāo​gāo.

   While not the most fully featured drawing app, Notes isn't too bad.

   Source: CCMatrix