Unlike other aircraft, blimps do not need to form a precise aerodynamic shape. This means they can lift improbable objects into the sky, such as dangling radar equipment. At altitudes of just a few hundred metres, a blimp carrying 20kg of remote-sensing electronics (including radar and thermal-imaging cameras) can identify, track and provide images of combatants dozens of kilometres away, by day or night. It can also help commanders aim the lasers that guide their missiles.
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On day four, The heavenly bodies that give off light by day or night are created.
在第四天,那些在白天或者晚上发光的天体被创造了。
Whether by day or night, electricity is restored, the emergency lights automatically turn off.
无论白天或夜晚,市电恢复正常时,应急灯自动。
Look at the teamster on the highway, wending to market by day or night; does any divinity stir within him?
看看公路上那些运马人,在通往市集的路上日夜兼程;难道他的内心里还有什么神圣在活动?
On day four, The heavenly bodies that give off light by day or night are created.
在第四天,那些在白天或者晚上发光的天体被创造了。
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