Perhydroanthracene
蒽烷, 全氢化蒽
🗣️ 情景例句
I'm a little uncertain.
我有点犹豫不决。
Thank you for inviting us; we had a wonderful time.
谢谢您的邀请，使我们过得很快乐。
Is that your bike?
那是你的自行车吗？