fuel-tank vent

例句：

1. 1. The engine needs to be checked regularly to ensure proper fuel-tank ventilation.
   发动机需要定期检查，以确保良好的燃油箱通风。
2. 2.During the engine overhaul, the technician found a small fuel-tank vent that needed to be sealed.
   在发动机大修期间，技术人员发现一个小的燃油箱通风口需要密封。
3. 3. The vehicle's fuel efficiency has improved significantly since the fuel-tank vent was modified.
   自从修改了燃油箱通风口后，这辆车的燃油效率有了显著提高。