When the needle enters the red zone the engine is too hot.
当指针进入红色区域时，发动机就过热了。
And judging by how hot this engine is, they haven't gotten far.
而且从引擎的热度看，他们走得不远。
However, don't try to drain the oil if the engine is hot.
但是，如果引擎是热的情况下，请不要试图排。
Ask Jimmy about it. He's pretty hot at diagnosing engine troubles.
问问吉米，诊断发动机的毛病他可是挺有一手的。
Do not open the fuel tank cap while the engine is running or when the engine is hot.
当发动机正在运转或温度高时，请勿揭开油箱盖。
Particle system is one of the hot topics in the game engine.
粒子系统是目前游戏引擎研究领域的热点之一。
Particle system is one of the hot topics in the game engine.
粒子系统是目前游戏引擎研究领域的热点之一。
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