Poly(vinyl fluoride)
[化] 聚氟乙烯
🗣️ 情景例句
we're not sure
我们还不能肯定
I have two tickets for a great movie. Why don't you come with me?
我有两张大片的电影票，你要同我一起去看吗？
The twin towers are 110 storeys high, but high-speed lifts controlled by computer take only a minute to reach the top.
这座双塔式大楼有110层高，而由电脑控制的高速电梯只需一分钟就可以到达塔顶。