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
We have another event to attend on the same day.
那天我们有其他活动要参加。
Misforunes come on horseback and go away on foot.
遭灾易，消灾难。
Look out! There's a kangaroo!
当心！一只袋鼠！