Her abdominal muscle is very strong.

她的腹肌非常强壮。

He exercises his abdominal muscle every morning.

他每天早上都锻炼腹肌。

You can strengthen your abdominal muscle by doing sit-ups.

你可以通过仰卧起坐来锻炼腹肌。

She does yoga every day to keep her abdominal muscle firm.

她每天做瑜伽来保持腹肌的紧实。

His abdominal muscle is injured and needs a few days of rest.

他的腹肌受伤了，需要休息几天。

Rigor of abdominal muscle (wooden belly, board-like rigidity)

腹肌强直（板状腹，板样强直）

The effects of abdominal muscle coactivation on lumbar spine stability.

脊柱稳定的差异较不明显腰腹部肌肉的效果。

Abdominal law: Inspiratory when loosen abdominal muscle, expiratory when contractive abdominal muscle, such thresh 3 minutes.

呼吸法：吸气时放松腹肌，呼气时收缩腹肌，如此反复做3分钟。

Abdominal muscle: Any of the muscles of the front and side walls of the abdominal cavity.

腹肌：腹腔前壁及侧壁的肌肉。

ABdominal muscle : Any of the muscles of the front and side walls of the abdominal cavity.

腹肌: 腹腔前壁及侧壁的肌肉.