Particle pollution - such as smoke, dust and heavy metals -- is known to irritate the airways and worsen asthma, and several studies have linked it to heart disease.

众所皆知，颗粒污染，诸如烟、尘、重金属等，会刺激呼吸道，从而加重哮喘。 有几项研究也把颗粒污染与心脏病联系在一起。

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Changes to the actual game are that some particle effects have been tweaked for minor aesthetics (mainly making smoke softer), and that "Battle Mode" now has a new time limit.

在实际游戏中的变化是，一些粒子效果已调整为较小的美学(主要制造烟雾软)，和“战斗模式”现在有一个新的时间限制。

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This paper presents a real time cartoon smoke simulation algorithm based on fluid dynamics and particle system.

提出一种流体力学模型结合粒子系统的卡通烟雾实时模拟算法。

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