通过受污染的水仍然存在病毒传播的风险。

There is still a risk of ___transmission of the virus through infected water.

她的工作有助于知识的代际传播。

Her work contributes to the ___transmission of knowledge across generations.

通过互联网信息的快速传播改变了现代通信。

The rapid ___transmission of information via the internet has changed modern communication.