F: How about pouring hot water on the anthills?弗兰克: 那在蚁丘上倒热水你觉得怎么样?The mountains resemble anthills then, with crowds streaming up their steep trails.人潮源源不绝地爬上陡峭的小径,山脉在这时就像蚁丘.I found spider webs, bird nests, wildflowers, ...
电流滞后于电压.The current lags behind the voltage.如果输入的电压是+3伏, 那么输出的电压便是-6伏.If the input voltage is plus three , it comes out as minus six.我们用以表示电压和电流的单位分别为伏特和安培。The units in which we show voltage and current are volt and ampe...