Pfpc
abbr. Parents of Fluoride-Poisoned Children 氟中毒儿童的父母
🗣️ 情景例句
All set for eating.
吃饭用的一切都准备好了。
The data confirm that this product is safe and effective.
数据证实此种产品安全有效。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，