propagator
noun [ C ] biology specialized uk/ˈprɒp.ə.ɡeɪ.tər/ us/ˈprɑː.pə.ɡeɪ.t̬ɚ/
（供种子或幼苗生长用的）培育箱
a box in which seeds or young plants are grown, that has a transparent cover and is sometimes heated
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