Cryoprotectant
冷冻保护剂
🗣️ 情景例句
You'll never get to college to find out, Robbie,
你根本就进不了大学去探究这个问题的答案 ，Robbie，
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
I did not know the way to my hotel, so I asked a porter.
我不知道去饭店的路该怎么走，于是向一个搬运工打听。