这种病毒的传播能力令人担忧。

The ___transmissibility of this virus is causing concern.

这台机器具有出色的传动性能，能够平稳地传递动力。

This machine has excellent ___transmission to transfer power smoothly.

这个房间的窗户玻璃能有效降低声音的传播。

The window glass in this room effectively reduces the ___transmissibility of sound.