Nbfm
[电] 狭带频率调变
🗣️ 情景例句
We'll have a great time camping out, I'm sure.
我确定我们会在露营时玩得很开心。
Step after step the ladder is ascended.
按部就班，循序渐进。
When several elephants are being trained at one time,
几只象同时训练时，