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- Mine the air for nitrogen 从空中提取氮
- The factories are responsible for fouling up the air for miles around. 这些工厂造成了很大范围的空气污染。
- Kites could stay in the air for many hours. 风筝能一连好几个小时留在空中。
- That program has been on the air for 25 years now. 那节目已播放了二十五年了。
- Christmas was in the air for weeks before. 圣诞节前几个星期，大家就忙于考虑如何过节了。
- He goes up in the air for no reasons at all. 他无缘无故就发脾气了。
- We'll be off the air for the summer and returning for a new series in the autumn. 我们将於夏季停播而於秋季开始播放一套新节目。
- An airplane cannot fly out into space be cause it must have the air for its propellers to push against. 飞机不能飞入太空，因为飞机的螺旋桨如果没有空气的反推力推进，是飞不起来的。
- Throw the ball into the air for them to head. 把球扔到空中让他们顶头球。
- Remember to test the air for the smell of roses. 记住去检验空气中的玫瑰气味。
- He goes up in the air for no reason at all. 他常常无缘无故发脾气。
- Jordan can stay in the air for such a long time. 乔丹能在空中停留如此长的时间。
- Frobide to keep the heavies in the air for long. 禁止在起重机不工作时把重物长时间悬在空中。
- Men had travelled through the air for the first time! 这是人们第一次在空中旅行！
- Clouds of smoke and steam filled the air for ever and ever. 空气里长年累月充满着缭绕不绝的浓烟和蒸气。
- The Robin may take to the air for only a few minutes a day. 知更鸟一天中可能只在天上飞几分钟而已。
- The factory is responsible for fouling up the air for miles around. 该工厂造成了很大范围的空气污染。
- Patroni stabbed his glowing cigar through the air for emplasis. 佩特罗尼把他那只点燃着的雪茄在空中指指点点来强调他的话。
- The air in the garden was warm and fragrant. 花园里的空气一片温馨。
- The archers sent their shafts through the air. 弓箭手向空中射出利箭。
