Phi
n. 希腊语的第二十一个字母(Φ,φ)
🗣️ 情景例句
I mean about her being alone.
我是指她很孤单。
I ask him to wait a few minutes.
我要求他等几分钟。
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。