1. in perpetuity   idiom   

原句: And here these companies were charging up to 15 percent of my sales in perpetuity.

意思: for all time in the future

例句: The trust fund will ensure preservation of the site in perpetuity.

1. gregarious   adjective   

原句: Most Amaricans prefer hearty handshakes and often consider less-gregarious Korean greetings as weak and effeminate.

意思: liking to be with other people

字源: mid 17th cent.: from Latin gregarius (from grex, greg- ‘a flock’) + -ous. 

例句: She's very outgoing and gregarious.