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DNA 英 [ˌdi: en ˈeɪ] 　美 [ˌdien'eɪ]

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DNA

abbr. 脱氧核糖核酸（deoxyribonucleic acid）；（美国）国防部核子局（Defense Nuclear Agency）　

名词复数:dnas　

Nothing has the capacity to replicate itself except DNA.　除DNA外，什么东西也没有自我复制的能力。

At the moment, the regulation on how much human DNA can be put into an animal is vague.　目前，有关多少人类脱氧核糖核酸可以放入一只动物身上的规定，还很模糊。

Your DNA is what makes you uniquely you. It's that double helix that your genes are made of. Your DNA accounts for why you resemble your parents and it distinguishes you from your pet frog and from everybody else.

1. Nothing has the capacity to replicate itself except DNA.

除DNA外，什么东西也没有自我复制的能力。
2. At the moment, the regulation on how much human DNA can be put into an animal is vague.

目前，有关多少人类脱氧核糖核酸可以放入一只动物身上的规定，还很模糊。
3. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.

构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。