Beta substitution
[化] β-取代
🧩 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
substitution
[ˌsʌbsti'tju:ʃən]
n. 代替;代用;替换;<化>取代（作用）;
🗣️ 情景例句
Both are equally effective.
两者都有效。
He isn't really serious; he's just playing games with her.
他并不是一本正经，只是跟她玩玩游戏而已。
There's a label on the handle with my name and address on it.
箱把上有一标签，上面写着我的姓名和住址。