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1. The heart's arteries carry blood to the rest of the body.
心脏的动脉将血液输送到身体的其他部位。
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2. Blood flows through the arteries and veins in our bodies.
我们的体内有动脉和静脉流动着血液。
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3. Doctors use ultrasound to examine the arteries and veins in the body.
医生使用超声波检查体内的动脉和静脉。