考研英語長難句詳解
57. It is possible to make specific complementary DNA s (cDNA s)that can serve as molecular probes to seek out the messenger RNA s (mRNA s)of the peptide hormones. If brain cells are making the hormones，the cells will contain these Mrna S. If the products the brain cells make resemble the hormones but are not identical to them，then the cDNA s should still bind to these mRNA s，but should not bind as tightly as they would to mRNA s for the true hormones. (4)
科學家可以制造出特異的(specific)互補DNA s(cDNA s)，以此作為分子探子(molecular probe)，探覓出肽激素的信使RNA s(mRNA s)。如果大腦正在制造著肽激素，則細胞就會含有這些信使RNA s.假若細胞所制造的產品類似于肽激素但并非與這些肽激素全然相同，那么，互補cDNA s應仍然和這些信使mDNA s粘結的程度。含有這些mRNA s的腦細胞然后就可以被分離開來，研究者可對其信使RNA s進行解碼，以確定它們的蛋白質產品究竟是什么，并確定這些蛋白質產品在何種程度上類似于真正的肽激素。
難句類型：易混詞
解釋：與其他的難句不同的是，心上的英文不止一句。筆者之所以在本句中不設標志和翻譯，是因為這三句話從結構和意思上來說并不難。然而很少有人能夠真正的一次把這段話讀清楚，原因在于兩個容易混淆的單詞cDNA s和mRNA s在文中交替出現，而且相互作用;再加上brain cell和hormones從中搗亂，更難讀清楚原文的意思。原文的主要意思如下：可以用cDNA s來探測mRNA s。如果腦細胞產生了荷爾蒙，則其中必有mRNA s意味著可用cDNA探測荷爾蒙。如果腦細胞制造的不是真荷爾蒙，則可以用cDNA s與其中的mRNA s附著的情況來確定此荷爾蒙的真假。
意群訓練：It is possible to make specific complementary DNA s (cDNA s)that can serve as molecular probes to seek out the messenger RNA s (mRNA s)of the peptide hormones. If brain cells are making the hormones，the cells will contain these Mrna S. If the products the brain cells make resemble the hormones but are not identical to them，then the cDNA s should still bind to these mRNA s，but should not bind as tightly as they would to mRNA s for the true hormones.
57. It is possible to make specific complementary DNA s (cDNA s)that can serve as molecular probes to seek out the messenger RNA s (mRNA s)of the peptide hormones. If brain cells are making the hormones，the cells will contain these Mrna S. If the products the brain cells make resemble the hormones but are not identical to them，then the cDNA s should still bind to these mRNA s，but should not bind as tightly as they would to mRNA s for the true hormones. (4)
科學家可以制造出特異的(specific)互補DNA s(cDNA s)，以此作為分子探子(molecular probe)，探覓出肽激素的信使RNA s(mRNA s)。如果大腦正在制造著肽激素，則細胞就會含有這些信使RNA s.假若細胞所制造的產品類似于肽激素但并非與這些肽激素全然相同，那么，互補cDNA s應仍然和這些信使mDNA s粘結的程度。含有這些mRNA s的腦細胞然后就可以被分離開來，研究者可對其信使RNA s進行解碼，以確定它們的蛋白質產品究竟是什么，并確定這些蛋白質產品在何種程度上類似于真正的肽激素。
難句類型：易混詞
解釋：與其他的難句不同的是，心上的英文不止一句。筆者之所以在本句中不設標志和翻譯，是因為這三句話從結構和意思上來說并不難。然而很少有人能夠真正的一次把這段話讀清楚，原因在于兩個容易混淆的單詞cDNA s和mRNA s在文中交替出現，而且相互作用;再加上brain cell和hormones從中搗亂，更難讀清楚原文的意思。原文的主要意思如下：可以用cDNA s來探測mRNA s。如果腦細胞產生了荷爾蒙，則其中必有mRNA s意味著可用cDNA探測荷爾蒙。如果腦細胞制造的不是真荷爾蒙，則可以用cDNA s與其中的mRNA s附著的情況來確定此荷爾蒙的真假。
意群訓練：It is possible to make specific complementary DNA s (cDNA s)that can serve as molecular probes to seek out the messenger RNA s (mRNA s)of the peptide hormones. If brain cells are making the hormones，the cells will contain these Mrna S. If the products the brain cells make resemble the hormones but are not identical to them，then the cDNA s should still bind to these mRNA s，but should not bind as tightly as they would to mRNA s for the true hormones.
