Sepharose
琼脂糖(凝胶)
🗣️ 情景例句
He's just fooling around.
他用情不专。
Misfortune comes on wings and departs on foot.
遭灾易，消灾难。
Then, instead of having someone answering the phone all day, people can ring up the railway station and listen to a tape recording of the information.
然后，人们可以打电话到火车站，从录音电话中获取信息，而不要安排一个专人整天接电话。