Vaccenic acid
[化] 11-十八碳烯酸\\n[醫(yī)] 異油酸, 十八碳二烯-7,8-酸
?? 詞語組成解析
??? 情景例句
A man can develop his mind by reading.
讀書增進個人的智慧。
Don't forget to put stamps on the letter before you mail it.
不要忘記在寄信以前把郵票貼在信封上。
In her letter, she said that she would come to England next year.
在信中她說她明年將到英國來。