【教練示範🧑‍🏫】滑輪下拉：背肌訓練動作，助你練出背部完美線條。 想知自己做得啱唔啱✅❎就快D去片🎦啦！ 【Coaching Demonstration 🧑‍🏫】Lat Pulldown: Back muscles training which can help to you achieve the V-shaped back line.