TIP: Be sure to keep your forearm parallel to the ground, your elbow by your side, and your wrist straight.
提示：确保你的前臂平行于地面，你的肘关节贴着你的身体，腕关节伸直。
TIP: Be sure to keep your forearm parallel to the ground your elbow by your side and your wrist straight.
提示：确保你的前臂平行于地面，你的肘关节贴着你的身体，腕关节伸直。
TIP: Be sure to keep your forearm parallel to the ground your elbow by your side and your wrist straight.
提示：确保你的前臂平行于地面，你的肘关节贴着你的身体，腕关节伸直。
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