2 sentences

1. 血液通过静脉流回心脏。

   xuè​yè tōng​guò jìng​mài liú huí xīn​zàng.

   Blood flows back to the heart through the veins.

   Source: Dong Chinese Dictionary

2. 她需要静脉注射抗生素。

   tā xū​yào jìng​mài zhù​shè kàng​shēng​sù.

   She needs IV antibiotics.

   Source: OpenSubtitles