Radiospectrography
无线电频谱学
🗣️ 情景例句
You must be very tired after the journey.
旅行之后，您一定累了吧！
Certainly. Here you are.
当然罗。给您。
Ever since then, the great monument has been a symbol of liberty for the millions of people who have passed through New York Harbour to make their homes in America.
从那时起，这座伟大的纪念碑对通过纽约港进入美国定居的千百万人来说就一直是自由的象征。