声相 meaning in English

acoustic phase
acoustical phase

Being and non - being , difficult and easy , long and short , high and low , voice and sound , back and forth , they always come in pairs
有无相生,难易相成,长短相形，高下相盈，音声相和，前后相随,恒也。
Then the howl of a far - off dog rose on the night air , and was answered by a fainter howl from a remoter distance . tom was in an agony
然后远处有一只狗嗥叫起来，这叫声在夜晚的上空震荡，与远处的隐隐约约传来的狗叫声相呼应着。