Ozonidate
臭氧剂
🗣️ 情景例句
Something old ...
旧的东西……
Hardships never come alone.
祸不单行。
Bison waste no longer fell on the ground to improve the soil, which as a result became less good for growing plants.
地上不再有野牛的粪便来改良土壤，结果对于植物生长土壤变得不够肥沃了。