pulse pile-up

例句：

1. 1. The server experienced a sudden pulse pile-up, causing the website to crash.
   服务器突然发生脉冲堆积，导致网站崩溃。
2. 2. The patient's pulse piled up during the surgery, indicating that he was in critical condition.
   患者在手术期间脉搏堆积，表明他处于危急状态。
3. 3. The team worked tirelessly to resolve the pulse pile-up and ensure smooth operations.
   团队不懈努力解决脉冲堆积问题，确保运营顺畅。