Pemf
[医][=pulsating electromagnetic field]脉冲电磁场
🗣️ 情景例句
That's good news.
这是个好消息。
The weather is nice today.
今天天气很好。
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。