pet phrase，lip-service，shibboleth，commonplace sayings，tag ；

[例句] 他开口说话总带口头禅. He could hardly open his mouth without using one or other of his tags.

[例句] 就像他们的口头禅: ‘ 我在这个地方住了二十年喽. ’ Like their everlasting, " I've been twenty years in this country. "