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英语翻译Two large veins pour the dark,used blood into the first

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英语翻译
Two large veins pour the dark,used blood into the first chamber,the right auricle,which passes it into the chamber below,the right ventricle.The muscle surrounding this part contracts in a beat that pushes the blood into the lungs where the carbon dioxide is removed and replaced with vital oxygen.Meanwhile,fresh scarlet blood from the lungs enters the left auricle to be transferred to the left ventricle.Form there it is forced by the contracting muscle through a valve into the aorta,the body’s largest artery which distributes it all over the body.
英语翻译Two large veins pour the dark,used blood into the first
两根粗大的静脉将已被利用的呈深红色的血液输入到第一个心房,再被位于右边的心耳传递到下面的心室,即右心室.这一部分四周的肌肉有节律地收缩,以此将血液推送到排除二氧化碳并吸入维持生命的氧气的肺.同时,来自肺的新鲜的猩红色的血液进入了心耳,并被转移到左心室.在这里它被收缩的肌肉用力推挤,通过房室瓣进入了主动脉,人体内最大的可将血液输送到全身的动脉.