Pinger
n. 声脉冲发送器, 铃声定时器
🗣️ 情景例句
Keep cool.
保持冷静。
He sketched the situation in a few vivid words.
他用几句生动的话概况了形势。
Then he sits and barks until someone lets him out.
这之后他就坐下汪汪叫起来，直到有人来把它放出去。