If you find three sparrows on the roof, you shot one, how many are left?
有三只麻雀在屋顶上,打下一只,还剩几只?
Teacher: If there are seven flies on a desk and I hit one with a ruler, how many are left?
老师:如果有七只苍蝇在桌子上,我用尺子打死了一只,那么还剩几只?
But saving the pangolin population is tough because scientists don't have a good estimate of how many are left in the wild.
但拯救穿山甲种群是困难的,因为科学家不能很好的估计野外还剩多少。
And step seven is how many electrons do we have left over that are going to go into lone pairs? How many?
而第七步是我们剩下,多少电子成为孤对电子?多少?
How many people here are left-handed?
有多少人是左利手呢
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