propagate
verb uk/ˈprɒp.ə.ɡeɪt/ us/ˈprɑː.pə.ɡeɪt/
(GROW)
[ I or T ]（使）（植物）繁殖
to produce a new plant from a parent plant
Most house plants can be propagated from stem cuttings. 大多数家养植物都能由切下来的茎繁殖。
Plants need certain conditions to propagate. 植物需要一定的条件才能繁殖。
[ I or T ] formal（动植物）繁殖，繁衍
(of a plant or animal) to produce young plants or animals
(SPREAD)
[ T ] formal传播，散播;宣传
to spread opinions, lies, or beliefs among a lot of people
The government have tried to propagate the belief that this is a just war. 政府竭力宣扬这是一场正义之战。
Such lies are propagated in the media. 这样的谎言通过媒体传播开来。