Preknock
预爆震
🗣️ 情景例句
You're right, Ellen.
你说得对， Ellen。
I wrote to my uncle last night.I couldn't put it off any longer.
我昨晚给我的叔叔写了信.我不能再推迟寄信了。
Only an exceptionally heavy snowfall might temporarily dislocate railway services.
只有非同寻常的大雪才可能暂时打乱铁路运行。