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。

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Remember to make eye contact and maintain good posture.

记得要和对方有目光接触，并保持良好的姿势。

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A good public speaker knows how to use effective gestures and maintain an appropriate posture while speaking to an audience.

一个优秀的公共演说家知道在演讲的过程中如何有效地使用手势和姿势。

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The wedges increased the forward tilt of the pelvis, which reduced pressure on the lower lumbar discs and the muscular effort required to maintain good posture, researchers said.

WSJ: Back Pain: Not Just for Adults