Microwave frequencies
[电] 微波频率
🧩 词语组成解析
n. 频率（frequency的复数形式）；频数分析；次数分配表
🗣️ 情景例句
Good. What do you think, Richard?
好。 你看呢 Richard？
She began playing the violin when she was nine.
她从九岁就开始练习小提琴。
No, they aren't. They're on the floor.
不，不在。它们在地上。