| 释义 |
Hawks circle at very slow speed supported by a thermal.鹰隼凭藉上升热气流的托举能非常缓慢地盘旋于空中。Gliders use thermal up-currents to gain height.滑翔机利用上升的热气流逐渐升高。Neutron bombs release lethal radiation instead of exploding with a lot of heat and wind.中子弹爆炸并不产生强热气流，而是释放致命的辐射。Birds use thermals to lift them through the air.鸟类利用上升热气流升入空中。 |