4 sentences

1. 长途客车票已经卖完了。

   cháng​tú kè​chē piào yǐ​jīng mài​wán le.

   Long-distance bus tickets are sold out.

   Source: Dong Chinese Dictionary

2. 科学家正致力于研发以氢为能源的客车。

   kē​xué​jiā zhèng zhì​lì yú yán​fā yǐ qīng wéi néng​yuán de kè​chē.

   Scientists are working on developing buses powered by hydrogen.

   Source: Dong Chinese Dictionary

3. 由于干线正在维修，往返两地的客车只能临时绕道。

   yóu​yú gàn​xiàn zhèng​zài wéi​xiū, wǎng​fǎn liǎng dì de kè​chē zhǐ néng lín​shí rào​dào.

   Because the main road is under repair, buses traveling between the two locations have to take a temporary detour.

   Source: Dong Chinese Dictionary

4. 这列客车共有十二节车厢。

   zhè liè kè​chē gòng yǒu shí'èr jié chē​xiāng.

   This passenger train has twelve carriages.

   Source: Dong Chinese Dictionary