Naphthophenanthrene
二苯并蒽
🗣️ 情景例句
Hi, Pop. Hi, Son.
你好， 爸。你好 ，儿子。
Prefer loss to unjust gain.
宁可受损失，休取不义财。
The brain needs a continuous supply of blood.
大脑需要连续不断地供血。