Delta ray
[电] σ射线
🧩 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;
ray
[rei]
n. （热或其他能量的）射线;光束，光线;微量;伞形花序柄;
vt. 放射;照射;（思想，希望等）闪现;发光;
🗣️ 情景例句
Very well, sir. You'll have them as soon as possible.
好的，先生。我会尽快送过去。
Rats leave (or desert or forsake) a sinking ship.
船沈鼠先窜。
Where is Lucy's bag?
露茜的书包呢？