Dynavar
戴纳瓦尔合金(定弹性系数合金, 精密机械弹簧用材料)
🗣️ 情景例句
Three. Besides Chinese, my mother tongue, I can also speak English and French.
三种，除了我的母语中文外，我还会讲英语和法语。
I enjoy my work too much, that it doesn't even seem like work.
由于我太以工作为乐了，所以不觉得是在工作。
He is crazy about Crazy English.
他对疯狂英语很着迷。