Folded cavity
[电] 折叠空穴
🧩 词语组成解析
folded
[['fəuldid]]
v. 折叠；交叉合拢；失败垮台；把牲畜关在栏中（fold的过去分词）
🗣️ 情景例句
And have you had an engineer come in to do an inspection?
你们可有一个工程师来做过检查吗？
I heard you.
我听到了啦。
It has been found that certain bats emit squeaks and by receiving the echoes,
人们发现，某些蝙蝠能发出尖叫声，