external oil cooler

例句：

1. 1.The external oil cooler is essential for maintaining the engine's temperature during high-speed operation.
   外部油冷却器对于在高速运行期间保持发动机温度至关重要。
2. 2. The external oil cooler helps to prevent the engine from overheating by distributing coolant evenly throughout the engine compartment.
   外部油冷却器通过将冷却液均匀分布在发动机舱内，帮助防止发动机过热。
3. 3.During maintenance, the technician carefully inspected the external oil cooler and replaced any damaged parts.
   在维护过程中，技术人员仔细检查了外部油冷却器，并更换了任何损坏的部分。