Telefilter
通信滤波器
🗣️ 情景例句
May I use the phone?
我可以用电话吗
Do you ever do exercises on Saturday?
你曾经在星期六做练习吗？
The prisoner felt sorry for him, but there was nothing else he could do.
战俘为他感到惋惜，但却没有别的选择。