Ppg
abbr. 聚丙二醇；脉冲程序发生器（ programme pulse generator）；每加仑脉冲数（Pulses Per Gallon）；聚醚
🗣️ 情景例句
and you won't get so many colds anymore.
你就不会老患感冒了。
Yes, he speaks English perfectly.
是,他能流利地说英语。
Everything around him was full of her presence, continually reopening the wound.
他身边的一切都是母亲的影子不断勾起他的伤感。