Pentactin
五放体(海绵)
🗣️ 情景例句
I've got no idea.
我不知道。
The whole class is in a heated discussion.
全班同学正在热烈讨论。
It will be found that the weight moves but slightly or not at all.
结果会发现，重物是动了，但动得很小，甚至没动。