propagation/ˌprɑː.pəˈɡeɪ.ʃən/名词(使)(植物)繁殖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。传播,散播;宣传light/sound/electromagnetic wave propagation光/声/电磁波的传播想跟读,去练习