propagation
noun [ U ] uk/ˌprɒp.əˈɡeɪ.ʃən/ us/ˌprɑː.pəˈɡeɪ.ʃən/
(GROWING)
（使）（植物）繁殖
the act of producing a new plant from a parent plant
Students researched the propagation of plants at the city's botanical garden. 学生们在该市的植物园研究了植物的繁殖问题。
We saw a demonstration on horticultural propagation at the greenhouse. 我们在温室里看到了园艺繁殖的演示。
formal（动植物）繁殖，繁衍
the producing of young plants or animals
The Game and Fish Department focuses on propagation, and other agencies monitor and protect breeding areas. 渔猎部专注于繁殖，其他机构监测和保护繁殖区。
- More examples
- The local nursery set up a propagation process using cuttings.
- Students conducted experiments on the optimal conditions for propagation of tropical plants.
- Trees stressed by drought drop more seeds to ensure propagation.
- They are researchers pondering the propagation of seabirds.
(SPREADING)
formal传播，散播;宣传
the act or process of spreading something, especially a harmful message or opinion, among a lot of people
The site is a platform for the propagation of the group’s ideology. 这个网站是一个传播该团体意识形态的平台。
They have allowed the propagation of hateful messages. 它们让仇恨信息得以传播。
A file isn’t always necessary for the propagation of a computer virus. 计算机病毒的传播并不总是需要文件。
physics specialized（光、声波等的）传播
the sending out or spreading of light or sound waves, movement, etc.
The aircraft were gathering data on radio wave propagation. 飞机正在收集无线电波传播的数据。
light/sound/electromagnetic wave propagation 光/声/电磁波的传播
See: propagate
- More examples
- The propagation of hate in social media must end.
- I oppose the propagation of nonsense.
- The system allows faster downloads and more rapid propagation throughout the network.
- In these conditions no sound propagation can take place.