Radiospectrography
无线电频谱学
🗣️ 情景例句
A whole day's work.
一整天的成果呀。
Do you have any tickets available for that date?
你们有那天的票吗？
These friendly dogs, which were first brought from Asia, were used as watchdogs even in Roman times.
那些最先从亚洲引进的狗，待人友好，早在罗马时代就给人当看门狗了。