Acetophenanthrene
[化] 乙酰菲
🗣️ 情景例句
Thanks, Mom.
谢谢 ，妈妈。
So far I have been learning about England.
到目前为止，我一直在研究有关英格兰的事情。
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。