Pentose nucleic acid (pna)

[化] 戊糖核酸

?? 詞語組成解析

pentose
n. [生化]戊糖
nucleic
a. 核的
acid ['?s?d]
adj. 酸味的;尖刻的;酸的;酸性的; n. <化>酸;酸味物質;
acid尖,酸,銳利 →酸;酸的,酸性的

??? 情景例句

You need to pay more attention to it.
你需要更加留心。
He's behind the rest of the class in reading.
他在閱讀方面不如班上的其他同學。
The early climbers were looking for the easiest way to the top, because the summit was the prize they sought, especially if it and never been attained before.
早期登山者所尋找的是通往山頂的最方便的途徑,因為頂峰特別是前人未曾到過的頂峰 -- 才是他們尋求的目標。
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