1. The whole point to DCMA and this site is a bunch of us friends doing what we love, surrounding ourselves with positivity. dcma和这个网站的意义就是我们一群朋友做着我们爱的事情，用积极的事情包围自己。
2. The local truncation error, stable conditions and positivity condition, for all these difference schemes are easily given. 简便地给出了全部差分格式的局部截断误差，稳定性条件和正性条件。
3. Positivity is the mother of success: We all know that positivity leads to attitude and unwavering faith to achieve success. 乐观是成功的母亲：我们都知道乐观带来实现成功的态度和坚定不移的信念。
英英解释
n.
1. the character of the positive electric pole
2. a quality or state characterized by certainty or acceptance or affirmation and dogmatic assertivenes
3. the quality of being encouraging or promising of a successful outcome
4. an amount greater than zero
5. the quality of being undeniable and not worth arguing about
