Pentazine
[化] 五嗪
🗣️ 情景例句
His appearance is impressive.
他的外表给人印象深刻。
My brother wants to learn how to swim.
我的兄弟要去学游泳。
It was as clear as daylight then that burglars had forced an entry during her absence.
事情很清楚，在她外出时，窃贼曾闯进家门。