paired-upBNC²³⁶²¹³⁺¹ 例句 When light of an appropriate wavelength strikes the solar cell, the individual packets of energy, called photons, knock some paired-up electrons free from their holes. 此时，如果适当波长的日光射到太阳能电池上，被称作光子的每个独立体便鼓着气力，将一部分的电子撞出“孔”洞。 ecocn