Nothing happens until the excitatory stimulus exceeds a certain'threshold'value.兴奋性刺激超过某一临界值以前毫无反应.Glutamate ( Glu ) is the main excitatory neurotransmitter in the central nervous system ( CNS ) .谷氨酸 ( Glu ) 是 ...
Meteorologists are at odds over the working of tornadoes.气象学者对龙卷风的运动方式看法不一.Tornadoes can pick up objects, animals and even people sometimes.龙卷风会卷走物品 、 动物,甚至于人类.And there is concern it could spawn tornadoes and flooding.也...
一群人正站在一起痛饮啤酒。A crowd of men were standing around swilling beer.一连几天都是宴会、痛饮、舞蹈和狂欢。The feasting, drinking, dancing and revelry continued for several days.那是一次人们可痛饮上等香槟酒的宴会.It was a party flowing with the best champagne....