Qcb
队列控制块
🗣️ 情景例句
You can see many posters that are put up before the movie opens.
每部电影首映前你都会看到铺天盖地的海报。
Do you ever learn Chinese during the holidays?
你曾经在假日期间学中文吗？
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。