1·His only connection to the outside world was an air tube and a bell. Each day he rang a bell to let those outside know that he was still alive.
墓内的僧人和外界的一切联系只有一根输气管和一个铃铛，每天僧人都会摇铃使外面人知其还活着。
2·While concentrations varied daily, typical concentrations of lead particles ranged from 0.6 to 1 microgram per cubic meter of air, Bell and her thesis adviser Catherine Cahill found.
Bell和她的论文导师Catherine Cahill发现，尽管浓度含量每天都发生变化，铅浓度含量一般在0.6到1微克每平方米空气之间。
3·Because it needs air to work, we won't be using it to move spaceships any time soon, but Alexander Graham Bell didn't have "call waiting" or "text messaging."
牵引光束需要空气才能工作，所以短时间内还不能用它来发射宇宙飞船。 这也无可厚非因为万事开头难嘛，贝尔当时也不能呼叫等待和发短信啊。
4·The noxious air likely results from a combination of natural and man-made sources, said Bell.
Bell说，有害的空气很可能是由自然和人为双重因素造成的。
5·Bell was referring to an internal tube carrying air that can affect the aerodynamics of the rear wing and provide extra speed on the two long straights on the Sakhir track.
Bell 指的是赛车内部一根能够传递空气的导管，它能够影响尾翼的空气动力情况从而在Sakhir赛道的两条大直道上提供额外的速度。
6·If air weren't admitted into the bell jar the electric bell in the bell jar would not ring because of a lack of a medium.
如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。
7·The chemist made a vacuum in the bell jar when he exhausted the air from it.
化学家抽走钟形瓶内的空气，使其成为真空。
8·If we can stand as tall and erect as a pine tree and sit as firmly and steadily as a great bell, then we'll have a natural air of dignity and vivacity, which gives us an extraordinary presence.
我们若能站得像松树一样挺拔，坐得像一座大钟那样四平八稳，自然英姿爽然，气概非凡。
9·The Bell X-5 gave NACA and Air Force researchers a chance to test out variable-sweep wings.
在贝尔x - 5和空军赋予的NACA研究人员一个机会来测试可变后掠翼。
10·If air weren't admitted into the bell jar, the electric bell in the bell jar would not ring because of a lack of a medium.
如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。