Beta ray
[电] β射线
🧩 词语组成解析
n. 希腊字母表的第二个字母\\n[医] β(希腊文的第二个字母), 乙种
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
Robbie! Who is it? Robbie
是谁呀？
There must be someone behind the door.
门后必然有人在。
'Oh dear,' said the conductor suddenly.
“哎呀，”售票员突然说，