You see, sometimes we buy a lot more than we need.
你知道，有时我们会买很多我们不需要的东西。
And sometimes we make real plans.
有时候我们也做一些真正的计划。
And sometimes we model light as a wave.
有时候我们把光看成一种波。
True, sometimes we regret our decisions;
是的，有时候我们会后悔作出的决定；
Yet sometimes we forgot to take our own advice.
然而有时我们却忘记采用自己的建议。
However, sometimes we do not have a choice.
然而，有时候我们却无法选择。
And sometimes we change our minds after we see it.
而有时候我们在看到之后会改变主意。
This is common sense and sometimes we forget about common sense.
这是一个常识，但有些时候我们忘记了常识。
Maybe sometimes we can imagine something that's really impossible.
也许有时,我们可以想象,一些完全不可能的事
Now, sometimes we would define that is this as the zero of energy.
所以有时会把基态，定为能量零点。
We are so close, but sometimes we will quarrel with each other.
我们是如此的亲密，但有时候我们也会吵架。
And sometimes we are alone and want to have those same good feelings.
有时候我们很孤单，希望拥有那些同样美好的感觉。
Or sometimes we can work together with our friends to make progress.
有时我们可以与我们的朋友一起努力一起进步。
Sometimes we will travel with our friends or families, but sometimes we will travel alone.
有时我们会与我们的朋友或家人一起去旅行，但有时我们会独自旅行。
Sometimes we camp out at night.
有时我们在晚上露营。
Sometimes we go out for a walk.
有时我们出去散步。
Sometimes we see the full moon.
有时又会呈现满月。
Sometimes we play hide and seek.
有时，我们还会玩捉迷藏。
Sometimes we just know too much.
有时候我们知道的太多了。
Sometimes we lose sight of this.
有时我们会看不见这一点。
Sometimes we go to school early.
有时我们很早就上学。
Sometimes we go to school by bus.
有时我们乘公交车去上学。
Sometimes we need stepping stones.
有时我们需要垫脚石。
Sometimes we can do better, though.
可是，有时我们可以做得更好。
有时我们在网上聊天。
Sometimes we wait in a helpless way
有时候我们无助地等待着
Sometimes we learn English together.
有时候，我们会在一起学英语。
Sometimes we use it in the negative.
有时候我们把它用于否定。
Sometimes we use it in the negative.
有时候我们把它用于否定。
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