Infra acoustic frequency
[电] 低声频
🧩 词语组成解析
adv. 在下, 以后\\n[法] 在下, 以下
acoustic
[ə'ku:stik]
adj. 听觉的;声学的;原声的;音响的;
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
🗣️ 情景例句
Has a poor personal appearance.
衣着形象不佳。
We are sure the contract can be carried out smoothly.
我们确信合同会顺利执行的。
he said. But I don't have many friends, and I don't enjoy myself very much. I don't know why!
他说，“但是我没有很多朋友，我过得不很愉快。我不懂为什么！”