Radiospectrography
无线电频谱学
🗣️ 情景例句
I don't know how she does it.
我不知道她怎么办到的。
I'd like to take off for home tomorrow.
我想下星期五请假。
and he had seen there evidence enough to overthrow Aristotle and Ptolemy together.
观察到的论据足以把亚里士多德和托勒密一起推翻。