virus ·noun (SMALL ORGANISM)

Definition: an infectious organism too small to be seen that causes disease, or an illness that it causes Level: B2

流感病毒在拥挤的地方容易传播。

The influenza ___virus spreads easily in crowded places.

我怀疑是某种病毒。

I suspect it's some kind of ___virus.

他感染了一种致命的病毒。

He was infected with a deadly ___virus.