2 The effects of anxiety on sleep in rats of twodifferent strainsa) Baseline sleep was recorded, the rats were trained to associate tone with footshock on 4 consecutive days.是什麼意思_2 The effects of anxiety on sleep in rats of twodifferent strainsa) Baseline sleep was recorded, the rats were trained to associate tone with footshock on 4 consecutive days.在線翻譯_英語_讀音_用法_例句