半导体器件在电子设备中能起各式各样的控制作用.Semiconductor devices can perform a variety of control functions in electronic equipment.在半导体收音机中晶体管代替了真空管.In semiconductor receivers transistors take the place of vacuum tubes.这半导体收音机小巧玲珑.This mak...
在我弟弟的高中毕业典礼上，学生们朗诵了一首诗。At my brother's high school graduation the students recited a poem.这首诗再怎么晦涩，至少有一点是清楚的。Whatever its obscurities, the poem was clear on at least one count.这些诗激发了一代又一代孩子的想象力。These poems have help...