Fission neutron
[电] 对裂中子
🧩 词语组成解析
🗣️ 情景例句
by having us all come together.
使我们聚在一起。
How much is the postage for this?
这个邮费要多少钱？
He usually stays at home with his pet dog.
他通常跟他的爱犬待在家里。