Preexistent
a. 先在的, 先存的
✅ 同义词
🗣️ 情景例句
My friend, I am in a big mess, do you think you could help me tomorrow?
朋友，我现在正忙得一塌湖涂。明天你可以帮一下我吗？
From the mountain, Lenny can look off across the valley.
雷尼可以从那座山眺望谷间远处的那边。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。