vein ·noun
Definition: one of the tubes in your body that carries blood to the heart Level: C1
医生指出了病人颈部明显的静脉。
The doctor pointed out the prominent ___veins in the patient's neck.
我喜欢运动时血液在静脉中奔腾的刺激感。
I love the thrilling sensation of blood rushing through my ___veins during exercise.
在手术过程中，避免刺破任何主要静脉以防止过度出血至关重要。
During the procedure, it's crucial not to puncture any major ___vein to avoid excessive bleeding.