Pinger
n. 声脉冲发送器, 铃声定时器
🗣️ 情景例句
I still don't understand what you mean.
我还是弄不懂你是什么意思。
How much is a one-way ticket to Beijing?
一张到北京的单程票要多少钱？
The development of films with sound became a problem for Chaplin.
有声电影的研制对卓别林来说就成了问题。