The performer is in the worst possible position for the actual sound, because they're hearing the contact of the stick on the drum, or the mallet on the bit of wood, or the bow on the string, etc., or the breath that's creating the sound from wind and brass.
演奏者可能正位于声音最不好的位置 他们听到的是鼓棒碰触鼓面的声音 或是木槌碰触木块的声音，又或是弓碰触弦的声音，等等 或是为了发出声音而吹动管乐器的呼吸声