这个USB集线器支持直通模式，可以无损传输数据。

This USB hub supports ___pass-through mode to transfer data without loss.

这家公司将电费作为直接转嫁费用，全额传递给终端用户。

The company treats electricity costs as a ___pass-through expense, fully transferring them to end users.

这扇门上的小孔是一个通道，可以让猫咪自由进出。

The small hole in the door serves as a ___pass-through for the cat to come and go.