Ferroelastics
铁弹体
🗣️ 情景例句
Yes? May I help you?
什么事？我能为您效劳吗？
Can you keep an eye on my bag?
帮我看一下包好吗？
Let us suppose that a child suddenly crosses the road in front of you.
让我们假设一个小孩子突然在你前面穿过马路。