burette with straight stopcock

例句：

1. 1.The doctor gave me a shot of medicine.
   医生给我打了一针药。
2. 2. She used a needle to inject the medicine into her arm.
   她用针将药注入手臂。
3. 3.The nurse carefully inserted the needle into my vein.
   护士小心翼翼地将针插入我的静脉。