Tetrafluoride
n. [化]四氟化物
🗣️ 情景例句
He's quiet now.
他现在很安静。
I've never read a more stirring story.
我从来没读比这更激动人心的故事。
may have left an automatic messenger behind to await the possible awakening of an advanced civilization.
很可能会在离开太阳系时留下自动化信息装置，等待先进文明的觉醒。