- 小口径 xiǎokǒujìng small-calibersmall-bore; small-caliber
- 大口径 dàkǒujìng large caliberheavy caliber; large bore
- 对口径 duìkǒujìng to coordinate storiesto arrange for different people to give the same story or version of events
- 统一口径 tǒngyīkǒujìng to coordinate one's storyTo adopt a unified approach to discussing an issue or answering questions; to agree on a consistent public statement.