例句與造句

1. one of these splicing signals sits at the beginning of the intron and is called the 5'( five-prime ) splice site; the others, located at the end of the intron, are known as the branch site, the polypyrimidine tract and, finally, the 3'( three-prime ) splice site
   其中一段位在插入子的起頭，有一個(gè)剪接信號序列，標(biāo)明5'端剪接位；插入子的尾端有其他的信號：分支點(diǎn)、多嘧啶區(qū)，最后則是3'端剪接位。
2. It's difficult to find branch site in a sentence. 用branch site造句挺難的