When singing, you must learn to use your diaphragm for power.
Tips
usage
横膈膜 and 膈膜 (gémó) and 横膈 (héngé) are all used; the full 横膈膜 is the most explicit. 横 'horizontal' captures that it sits as a flat sheet between the chest and abdomen.
memory
横 (horizontal) + 膈 (separate / partition, with 月-flesh radical) + 膜 (membrane) = 'the horizontal partition membrane' — exactly what the diaphragm is anatomically.
