雷达 、 光和其它形式的电磁波将其动量和能量通过空间输送出去.Radar, light, and other electromagnetic waves transfer momentum and energy through space.电磁波是由一种称为速调管的微波电子管产生的.The electronmagnetic wave is produced by microwave tubes called klystrons.每一物体...
Excuse me, could you tell me where the lunchroom is?对不起, 你能告诉我午餐室在哪儿 吗 ?It was resolved that our schoo 1 have a lunchroom.我们学校决定开一间午餐厅.He tried to elbow me off the line in the lunchroom.他想用肘把我挤出餐厅的候餐行列....