Diaminovaleric acid
[医] 2,5-二氨基戊酸, 鸟氨酸
🧩 词语组成解析
🗣️ 情景例句
Some think that all's fair in business.
一些人以为商界的一切都是公平的。
When the fire started, I was writing letters.
当火起来的时候，我在写信。
We are all very excited and are looking forward to the Olympic Games because they have never been held before in this country.
我们都非常激动，盼望着奥运会的到来，因为在这个国家里还从未举办过奥运会。