原声例句
-
It's phosphate, carbon, carbon, carbon, phosphate, carbon, carbon, carbon, phosphate and it has this structure hanging off the side.
就是磷酸基与戊糖的碳反复连接,如此循环往复,这种结构构成了主链的一边
应用推荐
$firstVoiceSent
- 来自原声例句