例句與造句

1. Experiment about single - strand dna breaks in permanent middle cerebral artery occlusion of rats
   單鏈斷裂損傷的實驗研究
2. The orf1 proteins of all four chinese senv isolates had two motifs ( ftl and yxxk ) which were conserved in replication - associated proteins . in all four chinese senv isolates , the putative non - structure orf2 protein had a cav - like region . the putative orf3 protein had a serine - rich tract preceded by a cluster of basic amino acids ( r and k ) . database scaning suggested this region had high a percentage of homology with dna topoisomerase i protein of d . melanogaster , and might play an important role in the replication of such single - stranded dna viruses
   所有這四個中國分離株，均保留了o即1中與復制有關的保守序列( ftl和yxxk ) :在推測是非結構蛋白的orfz中均含有cav樣保守區(qū)w ‘ x7一h一x3一c一xl一c一xs一h ; orf3蛋白的堿性氨基酸(精氨酸和賴氨酸)簇后緊接著一個富含絲氨酸的區(qū)域，與d . molanogaster的dna拓撲異構酶i有一定的同源性，推測在單鏈dna的復制中起作用。
3. It's difficult to find single-stranded dna in a sentence. 用single-stranded dna造句挺難的