orifice differential

例句：

1. 1. The surgeon carefully made an incision through the patient's orifice.
   外科医生小心地在病人的开口处做了一个切口。
2. 2.The scientist used a microscope to examine the tiny orifice of the atom.
   科学家用显微镜检查了原子的微小开口。
3. 3.The engineer designed a new type of valve with larger orifices for better flow.
   工程师设计了一种新型阀门，具有更大的开口以提高流量。