Sporadic mutation
[医] 自然突变
🧩 词语组成解析
sporadic
[spə'rædɪk]
adj. 不定时发生的，时有时无的;零星的，分散的;哩哩啦啦;
🗣️ 情景例句
Hello, Sally. I'm glad to meet you.
你好，萨里，很高兴见到你。
It's cold this afternoon.
今天下午很冷。
A foreigner living in a Swedish village wrote to the Ombudsman complaining that he had been ill-treated by the police, simply because he was a foreigner.
一个住在瑞典乡村的外国人写信给司法特派员，抱怨说他受到警察的虐待，原因就是因为他是个外国人。