Pentanitrine
四硝季戊四醇
🗣️ 情景例句
Smoking is harmful to your health.
吸烟有害健康。
One should travel out of his own country at least once.
我们至少应该离开自己的国度去旅行一次。
One day she came into his office and happened to put her hands on the door of a locked safe.
一天，维拉走进父亲的办公室，偶然把手放在一个锁着的保险柜的门上，