Sepharose
琼脂糖(凝胶)
🗣️ 情景例句
It's not an important game, anyway.
话说回来， 这场比赛不重要。
In college I majored in science.What was your major?
在学院我主修了自然科学，你主修了什么？
Dan was most surprised when he heard the news.
丹听到这个消息后，惊奇万分，