Today, the space station?s exterior structure is as long as an American football field and it has about the same internal living space as a Boeing 747 jumbo jet.
今天空间站的外面结构长度约有一个美式足球场一般长，而内部的生活空间约像一架波音七四七珍宝客机般大。
This virus may have a unique structure not found in viruses affecting bacteria and eukaryotes-it has to be able to survive in the same extreme environment as the organism it infects.
这种病毒可能具有某种独特的结构，这种结构是能够影响细菌与真核生物的病毒所不具有的——它不得不像其感染的生物体一样，能够在同样极端的环境中生存。
Listing 2 has exactly the same structure as Listing 1, so it does not need any explanation.
清单2和清单1有一模一样的结构，因此无需多解释。
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