Pentazine
[化] 五嗪
🗣️ 情景例句
Good-bye, Mr. Carlson. Thanks.
再见， Carlson先生。谢谢。
Birth is much, but breeding is more.
出身固然重要，教养更且重要。
the fear of death is somewhat abject and ignoble.
如果怕死；就有点儿可怜又可鄙。