In fact, an individual viral particle is smaller than the weave of most fabrics.

事实上，单个病毒颗粒更小，比大多数面料的纹路还小。

Now, it's important to remember that we can't see viral particles in these images.

重要的是要记住我们我们在这些图像中看不到病毒颗粒。

One vital factor which predicts disease severity is how far viral particles make it into a person's lungs.

预测疾病严重程度的一个重要因素是病毒颗粒进入人体肺部的距离。

When the vaccine is injected into the body, the immune system immediately produces antibodies against the antigen proteins on these viral particles.

当疫苗注射到体内时，免疫系统立即产生针对这些病毒颗粒上的抗原蛋白的抗体。

One study has found evidence for viral particles in the brains of people with long COVID.

一项研究发现了长期 COVID 患者大脑中存在病毒颗粒的证据。

But mRNA vaccines don't actually contain any viral particles, so they don't have to be built from scratch to safely adjust each virus.

但 mRNA 疫苗实际上不包含任何病毒颗粒，因此它们不必从头开始构建以安全地调整每种病毒。

The researchers did not find viral particles in the samples taken when the children were ill, but detected large amounts of rna traces of aav2 -- which suggest that copious replication had happened in the past.

研究人员在儿童患病时采集的样本中没有发现病毒颗粒，但检测到了大量aav2的RNA痕迹-这表明过去曾发生过大量复制。