The tiny particles can damage the heart and lungs .

这些细小的颗粒能损害心脏和肺。

Then it sees where the weather takes the particles .

然后开始观测天气在什么地方吸收了这些微粒。

Where do particles come in ?

颗粒是如何侵入身体的呢？

It was hoped these would tangle the virus particles up .

人们希望这些能够将病毒微粒缠在一起。

The second problem is which particles to use .

第二个问题是应该利用何种物质的颗粒。