There's a lag period where if I was just looking for antibodies, nothing happens for a while.
这有一段迟滞期,如果我只是寻找抗体,一段时间内什么都不会发生。
How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground?
地面上什么也看不见,考古学家怎么知道到哪里去找他们要找的东西呢?
He spent two days looking for the treasure, but found nothing.
他花了两天时间寻找宝藏,但什么也没找到。
There's a lag period where if I was just looking for antibodies nothing happens for a while.
这中间存在一段迟滞期,如果只过一会就进行观察,抗体的数量不会发生变化
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