Pbq
abbr. parabenzoquinone 对苯醌
🗣️ 情景例句
Challenge, the feeling of accomplishment, and knowing that you have made a contribution.
挑战，成就感和知道自己做出了贡献。
He hasn't answered my letter yet.
他还没有给我回信。
Good, we can do that right away.
好的，立刻就办。