Whether you walk across the stage or stand behind a lectern, try to maintain good posture.
无论你是在舞台上走动或站在讲台后面，尽量保持好的姿势。
Why do humans walk on two legs? Our ancestors evolved an upright posture well before our large brains or stone tools even appeared.
在我们的大脑进化和石器工具出现以前，我们的祖先就已经进化成为了直立的姿势。
Walk away from the wall while maintaining this posture. Keep it up throughout your daily activities.
保持这样的姿势离开墙壁，在日常活动中也要保持该姿势。
Walk away from the wall while maintaining this posture. Keep it up throughout your daily activities.
保持这样的姿势离开墙壁，在日常活动中也要保持该姿势。
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