医院里所有婴儿的脚踝上都系有姓名标签。
All babies in the hospital have name tags tied round their ankles.
每只动物都系上了标有号码的小牌,以便辨认。
没什么大问题,因为我们都系了安全带。
There was nothing serious, because we all wore the seat belts.
And for Americans, all our democratic experience and do I have to put a tie on for this event or not?
美国人也如此,我们都参与民主政治,知道在什么场合需要系领带,比如现在
So anything that goes from a higher energy level to 2 is going to be falling within the Balmer series, which is in the visible range of the spectrum.
任何更高能级到2能级2,都是属于Balmer系,它在可见光谱中。
So in talking about the hydrogen atom, they actually have different names for different series, which means in terms of different n values that we end in.
所以就氢原子来说,它的每个系都有不同的名字,代表了不同的末态n值。
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