Panlite
聚碳酸酯树脂
🗣️ 情景例句
Well, that's what fathers are for.
嗯，父亲们的用处正在于此。
An old dog cannot alter its way of barking.
老狗难改吠声。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。