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- The system is based on a 'subaudible' tone injected after the audio stages into the transmitter during encode and the tone is detected before the audio circuits in the receiver. 这套技术的基本原理如下，进行编码（调制）的时候，一个“亚音”音频信号被注入声音信号，并在接收端的音频电路前检测这个音频信号解码。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
- His peremptory tone of voice irritated everybody. 他那专横的口气激怒了大家。
- He had an arrogant tone of voice. 他流露出傲慢的口气。
- subaudible tone 亚音频音调
- Don't speak in an authoritative tone. 不要用一种命令的口吻说话。
- Does the furniture tone in with the curtains? 家具与窗帘的搭配协调吗？
- He often speaks in an arrogant tone. 他经常以一种傲慢的口气说话。
- The bright blue wilt tone down with the effect of sunlight. 阳光一照射这明亮的蓝色就会柔和下来。
- I dislike his airy tone of voice. 我讨厌他那做作的声调。
- These exercises will tone up your muscles. 这些运动方式会强健你的肌肉。
- She spoke in a brisk tone of voice. 她用尖刻的语调说话。
- She spoke in a confidential tone of voice. 她用信任的口吻说。
- There is an acrid tone to your remarks. 你说这些话的口气带有讥刺意味。
- The subaudible electron-magnetic radiation has been detected by four Canadian scientists. 刚刚听见的电磁辐射已过四位加拿大科学家测出了。
- The tone of the school is excellent. 这所学校校风极好。
- That violin has a beautiful tone. 那支小提琴的音色很美。
- His peremptory tone irritated everybody. 他那专横的口气激怒了大家。
- The teacher spoke in a peremptory tone. 老师以命令的口吻说话
- I need to tone up with more exercise and a change of diet. 我需要加强锻炼和改变饮食来增强休质。
