implacable
adj
that cannot be changed or satisfied 不能变动的; 无法平息或安抚的
implacable hatred, fury, opposition 无法消解的仇恨、 愤怒、 对立
an implacable enemy, rival, etc 势不两立的敌人、 竞争对手等.
First the electroencephalograph (which is simply a device for recording the electrical activity of the brain by attaching electrodes to the scalp) shows that while there is a change in the pattern of activity during sleep,