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
I love animals.
我喜欢动物。
Please be aware that this is a crucial issue to us.
请了解这一点对我们至关重要。
When it was eventually brought to shore, it was found to be over thirteen feet long.
当终于把它弄上岸后，人们发现它身长超过了13英尺。