我要掷几把双骰子或玩几把二十一点纸牌。
难道八月里的夜晚，到了二十一点，天还没有黑? ?。
Would not the light be fading at twenty - one hours on an August evening?
他注意到壁炉架上的座钟已是九点了，那就是说二十一点。
He noticed that the clock on the mantelpiece said nine, meaning twenty - one.
从绘画我们可以看到，我已去二十一点五毫米深(Z轴)。
From the drawing we can see that I have to go 21.5 mm deep (the Z-axis).
从绘画我们可以看到，我已去二十一点五毫米深(Z轴)。
From the drawing we can see that I have to go 21.5 mm deep (the Z-axis).
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