They reach you, your eardrum starts to oscillate with the same frequency and you hear that tone.
你们听到声音,你的鼓膜以相同频率,开始震动,然后听到我的音调。
2
To reach the ground state, physicists had to cool their beams to nearly absolute zero. They also had to make the quanta as large as possible by making a beam stiffer to increase its frequency.