来自《耶鲁大学开放课程：新生有机化学 第4集 第4集》
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A dotted curve.一个点一弯 -
A dotted curve would be one possibility.一个点一弯是一种方案 -
Another possibility?还有其他的吗 -
Sophie?索菲 -
Half a head instead of a full head.用半箭头替换全箭头 -
Ah, like a fishhook instead of the double arrow.啊 就像一个鱼钩那样 -
And that's in fact what's used.而那正是被使用的 -
If you want to shift just one electron you show a single barb,如果你移一个电子就一个钩 -
and if you do a pair of electrons you show a double barb,如果一对电子就一对钩 -
a curved arrow.一个弯箭头 -
So curved arrows don't show atoms moving.弯箭头并不代表原子移动 -
They don't show this atom goes to there.不是说这个原子跑到那儿了