Delta matal
[机] 得尔他合金
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
🗣️ 情景例句
Yes, it's so easy.
没错， 它真简便。
This country is localed in the northern hemisphere.
这个国家位于北半球。
They had large rooms with beautifully decorated walls.
里面房间很大，墙壁装饰华丽。