Magmeter
直读式频率计(0-500赫)
🗣️ 情景例句
(looking at his calendar) Oh, next Friday is May 4th.
（正在看着日历）哦，下周五是五月四号了。
I'm sorry, but I can't find the book you lent me.
很抱歉！我找不到你借给我的那本书了。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。