Soundchecking
(soundcheck 的现在分词) （对录音或音响设备的）校音
🗣️ 情景例句
No problem, sir. Someone will bring them to your room shortly.
没问题，先生。有人会尽快给你送过去。
He could always come up with a reason for them to linger another month.
他总能想出个理由来让他们再耽误上一个月。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
这种通讯联系要靠21厘米波段，即每秒1420兆周的精确无线电频率。