Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
He says he'll get up at six tomorrow morning, but he'll never make it.
他说他明天早上要6点起床，但他是绝对做不到的。
His failure was a lesson to us.
他的失败是我们的一个教训。
We reached London this afternoon.
我们是今天下午到达伦敦的。