Violanthrole
二苯并羟蒽
🗣️ 情景例句
How about guests?
来宾呢？
No one can call back yesterday.
往日不复返。
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.
前些年，美国一位精神病学者发表了一篇报告，报告中记录了眼球在睡眠时的活动情况。