Refr
abbr. refrigerating 冷冻（的）; refrigeration 冷冻; refrigerate 冷藏; refrigerator 冷藏器
🗣️ 情景例句
And thank Susan.
还要谢谢， Susan。
I'm afraid I don't know. Let me ask the supervisor in this section.
恐怕我不知道，让我来询问一下该组的负责人。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）