Preenvelop
预包络
🗣️ 情景例句
Richard, I know your next book will be a success. Richard
我相信你的下一本书会成功。
What track does the Metroliner leave from?
华纽特快从第几轨道开出？
Betty and Susan are talking on the telephone.
贝蒂和苏珊正在通电话。