The enemy mask their enmity under an appearance of friendliness.敌人用友好的外表来掩饰内心的敌意.Its fearsome appearance struck terror into their hearts.它那可怕的样子使他们胆战心惊.He was fastidious about his appearance.他非常讲究仪表。He had the appearance...
它由一对同轴的圆筒组成.It consists of a pair of concentric cylinder.样品光谱是通过将小型管固定器与纤维之间同轴的方式获得的.The sample spectra were obtained with the cuvette holder in - line between the fibers....