Electra
n. 多区无线电导航系统
🗣️ 情景例句
Smoking will kill you.
吸烟会害了你。
Have you thought about staying home?
是否考虑在家呆着？
The basic features include a crest (the highest point of the wave),
它们的基本特征包括浪峰（波浪的最高点）