Meaning of tōng:
通
to go through; to know well; to connect; to communicate; open; to clear
Tā tōngguò suǒyǒu de kǎoshì.
他通过所有的考试。
He passed all his exams.
Tā duì zhè zuò chéngshì de yīqiè liǎo tōng.
他对这座城市的一切了通。
He knows everything about this city well.
Wǒmen de chéngshì tōngguò qiáoliáng tōng wǎng duìmiàn de dìfāng.
我们的城市通过桥梁通往对面的地方。
Our city connects to the other side through a bridge.
Wǒmen kěyǐ yòng shǒujī lái tōnghuà.
我们可以用手机来通话。
We can use the phone to communicate.
Zhè tiáo lù zhōngyú tōng le.
这条路终于通了。
This road is finally open.
Wǒmen xūyào bǎ lùshàng de zhàng'ài wù qīnglǐ, yǐ quèbǎo dàolù chàngtōng.
我们需要把路上的障碍物清理，以确保道路畅通。
We need to clear the obstacles on the road to ensure it is clear for traffic.
(suffix) expert
Tā shì yīgè jìshù tōng.
他是一个技术通。
He is a technology expert.
classifier for letters, telegrams, phone calls etc; classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)
Tā gěi wǒ dǎ le yī tòng diànhuà.
他给我打了一通电话。
He gave me a phone call.
Tā gāngcái fā le yī tòng píqì.
他刚才发了一通脾气。
He just threw a tantrum.
