a mixture of decayed (= destroyed by natural processes) plants, food, etc. that can be added to soil to help plants grow 混合肥料；堆肥 
potting compost (= a mixture of soil and compost that you can buy to grow new plants in) 盆栽混合肥料
Extra ExamplesTopics Gardensc1Repot the plant in fresh compost. 将植物倒入新鲜的堆肥中。 Sow the seeds in trays of potting compost. 将种子播种在盆栽堆肥的托盘中。 You can make your own compost in a compost bin. 您可以在堆肥箱中制作自己的堆肥。
Oxford Collocations DictionaryCompost is used before these nouns:- bin
- heap
- toilet
- …
Word Originlate Middle English: from Old French composte, from Latin composita, compositum ‘something put together’, feminine and neuter past participle of componere.
