four stroke diesel engine

例句：

1. 1. This four-stroke diesel engine is very efficient and can run for long periods without needing to be refilled.
   这台四冲程柴油发动机非常高效，可以长时间运行而无需补充燃料。
2. 2. The truck has a four-stroke diesel engine that provides powerful and reliable performance.
   这辆卡车配备了一个四冲程柴油发动机，提供强大且可靠的性能。
3. 3. The manufacturer claims that their four-stroke diesel engine is the most fuel-efficient in its class.
   制造商声称他们的四冲程柴油发动机是同类产品中最节能的。