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
Please wait for me. I won't be long.
清等等我，就一会儿。
We've got to get a sofa and a chair for the living room.
我们必须有一张沙发和椅子放在客厅。
So I don't think she's left the college. And her papers and books are all over the desk.
所以我认为她还在学校。而且她的作业和课本都放在桌子上。