Anthrasorb
活性炭
🗣️ 情景例句
I have no definite ideas in that area right now.
在这方面目前我还没有具体的想法。
Yesterday will not be called again.
光阴一去不复返。
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。