Spontaneous emission
[化] 自发发射
🧩 词语组成解析
🗣️ 情景例句
I know the house.
我熟悉这房子。
We should weep for men at their birth and not a t their death.
我们应在人降生时流泪，而不该在人死亡时哭泣。
My nephew, George, has a money box but it is always empty.
我的外甥乔治有一个储蓄罐，但总是空空的。