Nonary
a. 九进法的\\nn. 九个一组的东西
🗣️ 情景例句
and I have a production meeting at four.
我四点钟有个生产会议。
It's time for class.
上课时间到了。
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。