你可能想知道我们如何分辨化石上的动物是生活在陆地上还是水里,特别是如果只发现了化石碎片。
You might wonder how we can tell whether fossil animals lived on land or in water, especially if only fragments are found.
你知道我们是如何使英语进步的吗?
我不知道你是如何应对不确定性的!那我们该怎么办呢?
I don't know how you deal with the uncertainty! So what should we do?
I would ask you to see how such energy level diagrams rationalize what we know to be true.
我想问你,看看这种能级图,如何证实我们知道的是正确的。
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