当有人觉得情绪低落时，要努力相互打气。Try to support each other when one of you is feeling down.他们感到要为自己加油打气，自信满满地去打比赛并不容易。They find it difficult to pump themselves up for the games.我写那首歌是给我自己打气的。I wrote that song just to cheer myself up....
In the main rooms red-hot radiators were left exposed.在主室里，炽热的散热器暴露在外。You can preset the radiators to come on when you need them to.你可以预先调好暖气，使它在你需要的时候启动。The stars are radiators of vast power.恒星是巨大能量的辐射体....