Polyvinylidene
a. [化]聚偏二乙烯的
🗣️ 情景例句
I'm sorry, all the balcony seats are gone.
抱歉，包厢的票都卖完了。
That's too good to be true.
天底下哪有这种好事。
Today, enough soundings are available to enable a relief map of the Atlantic to be drawn
现在已有足够的水深测量数据来绘制一张大西洋洋底地形图，