他们中的许多人都站着，挽弓、搭箭对着我们。
Many of them were standing up, with bows drawn and arrows trained on us.
就像是在山式，你的小腿肌肉也要参与到胫骨中，向前压，不要往回弓。
As in Tadasana, your calves should be engaging into your shins, pressing forward not bowing back.
研究背景：主动脉弓处动脉粥样斑块是缺血性卒中的危险因素。
Background: Atherosclerotic plaques in the aortic arch are a risk factor for ischemic stroke.
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