Heptylene diacid
[化] 庚烯二酸
?? 詞語組成解析
庚烯
n. [化]二酸\\na. [化]二價酸的, 二酸的
??? 情景例句
I'm glad to have met you.
非常高興認識你。
A middle course is the safest.
中庸之道最保險。
Two of his greatest films, City Lights and Modern Times were of this kind.
他的兩部最偉大的影片《城市之光》和《摩登時代》就是這種影片。