Hvc
abbr. high vocal center （高级发声中枢）
🗣️ 情景例句
just so they can get
就是为了得到
Help yourself.
请便！
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。