1. Looks like a pressurized tank that's connected to the air recirculating system.

他们把高压气罐 连接到空气循环系统了

2. But perhaps one of your scientists could you know, could find a way to equip these hazmats with a you know, a simple, uh, inline recirculating fan to cool them off a bit.

但你們哪位科學家或許可以 給這里面散散氣 只需要一條簡易的列布式循環風機 就可以給這兒降降溫

以上参考资料就是本英汉词典详细汇总的单词recirculation的翻译英语含义，如有错漏请向我们提供反馈意见。