2 sentences for 运营 (yùn​yíng — service)

1. 这条跨境天然气管线正式投入运营。

   zhè tiáo kuà​jìng tiān​rán​qì guǎn​xiàn zhèng​shì tóu​rù yùn​yíng.

   This cross-border natural gas pipeline has officially gone into operation.

   Source: Dong Chinese Dictionary

2. 新修建的铁路将于明年正式投入运营。

   xīn xiū​jiàn de tiě​lù jiāng yú míng​nián zhèng​shì tóu​rù yùn​yíng.

   The newly built railway will officially go into operation next year.

   Source: Dong Chinese Dictionary