Delta rays
[医] δ[射]线(α粒子在气体所产生的β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;
n. 射线；[俚]日光浴；光线（ray的复数）
🗣️ 情景例句
I guess they're trying to set up an appointment for me.
我猜他们正设法给我安排晤谈。
I worked at the store yesterday.
我昨天在商店工作。
Did you know he was having an affair?
你知道他有外遇了吗？