Contarnic acid
[建] 可他酸
🧩 词语组成解析
🗣️ 情景例句
The best way to promote your products is through advertising.
推广产品最好的方法就是买广告。
Life is full of ups and downs.
人生沉浮多。
There will only be standing room left for us next century!
到下个世纪我们就只有立足之地了。