对于一只树蛙通常能活多久,我们确实知道得不多,可能只有几年,但没有证据表明它能长寿。
We really don't know a lot about how long a wood frog normally lives, probably just a few years but there is no evidence its longevity.
人们常常假设,但没有证据证明,在所谓的“大迁移”中,大多数移民来自农村地区,这是由两个同时发生的因素推动的。
It has been frequently assumed, but not proved, that the majority of the migrants in what has come to be called the Great Migration came from rural areas and were motivated by two concurrent factors.
第二个是中国正以低价收购欧洲的珠宝,但没有证据。
The second fear is that the Chinese are buying European jewels on the cheap. But there's no evidence for that.
But when I review the evidence, I come away thinking there's no good reason to move beyond the physical.
但当我考察这个证据时,我认为,没有比物理证据更好的理由
There is not much support for these.
但他的理论没有多少证据支持。
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