cold load

例句：

1. 1. The new engine has a cold start time of just 30 seconds.
   这款新引擎的冷启动时间仅30秒。
2. 2.During the cold start, the vehicle's computer system needs to warm up.
   在冷启动期间，车辆的计算机系统需要预热。
3. 3.The cold start can be a challenge for some engines, especially older models.
   对于一些发动机来说，冷启动可能是一个挑战，尤其是旧型号。