Such prejudices die hard.这些偏见很难消除。George is such a die - hard. He never gives up.乔治非常顽固, 他从不会屈服.But ignorance and misinformation about the health hazards of beryllium die hard.关于健康的破坏物铍的无知和误传是很顽固的....
那两名男子几次互调位置，并且每次交换时都会先灭了灯。The two men swapped places, always extinguishing the light when they changed over.特点: 高功率增益, 低噪声输出, 非常低的互调失真.Features: High power gain, low noise figure, very low intermodulation distortion.研究了有...