Concentric resonanter
[电] 同心谐振器
🧩 词语组成解析
🗣️ 情景例句
When you learn a new verb, learn its various forms.
学到了新动词时，记住它的各种形式。
Children learn to creep ere they can go.
孩子要走路，先得学爬行。
Is there any water in this kettle?
这水壶里有水吗？