busy tone [通信] 忙音 ; 占线音 ; 固定位时
group busy tone [通信] 群忙音 ; 群占线音
line busy tone 线路忙音 ; 占线音
channel busy tone 通道忙音 ; 信道忙音
Busy Tone BT 忙音
BT Busy Tone 占线音 ; 忙音
busy tone signal 占线信号 ; 忙音信号
LBT Line Busy Tone 线路忙音
busy-back tone 忙音 ; 蜂音
A busy friend may give your message just a quick glance, then pass it along with all the best intentions, so be cognizant of how you're presenting yourself, and be sure to keep a professional tone.
很忙的朋友可能只会粗略的浏览下你的邮件，然后好心的帮你转发给他的朋友们，所以你自己一定要注意你是如何描叙自己的，并且邮件要用专业的语调。
Samuel holds the phone to his ear till the dial tone goes busy.
塞缪尔僵硬的握着话筒，直到对面传来嘟嘟的忙音。
When elite busy like a gyroscope, no intermittent tone.
精英们忙得像只陀螺，没时间歇口气。
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