Sepharose
琼脂糖(凝胶)
🗣️ 情景例句
Susan, I don't plan to make any decisions Susan
我不打算做决定
Grocery bills are expensive.
食品价格昂贵。
In a few minutes he returned with my bag and gave it back to me.
一会儿工夫他拿着我的提包回来了，把它还给了我。