presternal sulcus

例句：

1. 1.The surgeon made a precise incision into the presternal sulcus to access the heart.
   外科医生在胸骨切迹处做了一个精确的切口来接触心脏。
2. 2. During surgery, the anesthesiologist carefully monitored the patient's vital signs and ensured the presternal sulcus was well-positioned.
   在手术期间，麻醉师仔细监测了患者的体征，并确保胸骨切迹位置正确。
3. 3. The patient's breathing was shallow and labored, which necessitated repositioning thepresternal sulcus for better oxygenation.
   患者呼吸浅而费力，这需要重新定位胸骨切迹以获得更好的氧气供应。