In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Q: Adolfo Sua ́ rez Madrid – Barajas Airport ( -RSB- ) , commonly known as Madrid – Barajas Airport , is the main international airport serving Madrid in Spain .

A: Adolfo Sua ́ rez , Madrid-Barajas Airport is Madrid 's biggest airport .
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Q: The atoms in molecules , crystals , metals and diatomic gases — indeed most of the physical environment around us — are held together by chemical bonds , which dictate the structure and the bulk properties of matter .

A: The atoms in molecules , crystals , metals and diatomic gases are held together by chemical bonds .
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Q: GC-MS has been regarded as a " gold standard " for forensic substance identification because it is used to perform a 100 % specific test , which positively identifies the presence of a particular substance .

A:
GC-MS is the best way for forensic experts to identify substances because it is a " specific test " .
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