3 sentences

1. 船只在长江中上行，速度比较缓慢。

   chuán​zhī zài Cháng Jiāng zhōng shàng​xíng, sù​dù bǐ​jiào huǎn​màn.

   The boat is sailing upstream on the Yangtze River at a relatively slow speed.

   Source: Dong Chinese Dictionary

2. 这列火车是上行的，终点站就是首都北京。

   zhè liè huǒ​chē shì shàng​xíng de, zhōng​diǎn​zhàn jiù shì shǒu​dū Běi​jīng.

   This is an up-train, and its final destination is the capital, Beijing.

   Source: Dong Chinese Dictionary

3. 这份年度报告上行之后，还需要等待上级的批复。

   zhè fèn nián​dù bào​gào shàng​xíng zhī​hòu, hái xū​yào děng​dài shàng​jí de pī​fù.

   After this annual report is submitted to the higher-ups, we still need to wait for their approval.

   Source: Dong Chinese Dictionary