相反，在它们激活时钟细胞后，这种通信明显下降。
Conversely, when they activated the clock cells, this communication decreased markedly.
当感觉细胞在一个周期的“睡眠”时段不会激活时钟细胞，因此感觉细胞很容易与加压素释放细胞进行通信。
When they did not activate the clock cells during the 'sleep' part of their cycle, it was easier for the sensory cells to communicate with vasopressin-releasing cells.
电脑病毒会隐藏在电脑中不被发现，当电脑时钟指向某一日期它会被自动激活。
A computer virus can sit undetected in a computer until it's automatically activated, as when computer's clock strikes a certain date.
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