水管通了
shuǐguǎn tōng le
The pipe is clear.
路通了吗?
lù tōng le ma?
Is the road passable?
电话通了
diànhuà tōng le
The call got through.
两地网络已经通了
liǎng dì wǎngluò yǐjīng tōng le
The networks between the two places are connected.