As I was looking through some books on a secondhand bookstall,I dropped on just what I wanted.当我在旧书摊浏览书籍时,我意外地找到了我所需要的书。She will never come into the bookstall again.她不会再来这个报摊了.Perhaps you might chance upon the dictionary...
Perhaps you might chance upon the dictionary at some old bookstall.或许你会在旧书摊上偶然发现这本字典.She will never come into the bookstall again.她不会再来这个报摊了.As I was looking through some books on a secondhand bookstall , I dropped on ju...
These cells often have a variable chromosome number ( aneuploid ).这些细胞的染色体数目不等, ( 称为“非倍数染色体”. )Aneuploid describes chromosome numbers which are not multiples of the haploid number ( n ).非整倍体所描述是单倍体数目 ( n ) 并非成倍增加.The DNA...