什么时候抽签?
The drawing format used above is useful for showing branch histories, but it can get a bit messy when there are lots of branches.
使用上述描述绘制图表,对于展示分支历史来说很有用;但是如果同时有很多分支存在,就可能带来混乱。
Drawing attention to the census is especially important in cities and counties with lots of people who are hard to count.
在那些难于统计人口的城市和乡村,人口普查工作尤其要得到重视。
It's always a good first approximation, because you need to start somewhere in terms of drawing Lewis structures, but then if you go and figure out the formal charge and you just have lots of charge separation or very high charges, like a plus 2 and a minus 2 and a minus 1 all different places in the atom, what it should tell you is maybe there's a better structure.
它总是一个好的第一近似,因为在画路易斯结构的时候,你总需要一个起点,但是如果你在算出形式电荷之后,发现有很多电荷分开了,或者说有很高的电荷,比如有一个正二,一个负二,还有一个负一1,在原子的各个地方,这应该就是在告诉你,或许还有一个更好的路易斯结构。
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