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
Even the old patchwork quilt is the same!
甚至这条旧的百衲被罩也是一样！
His working is behind schedule.
他的工作比预定的进度落后了。
After lunch Aunt Huang came in and she looked worried.
午饭后黄阿姨来了，她面带愁容。