整个地球可以想像为一块硕大无朋的磁石.The earth may be thought of as a gigantic magnet.她能像磁石般吸引剧院观众.She can magnetise a theatre audience.某些金属受磁石的吸引.Certain metals are attracted to a magnet....
Do you have an art room in your school?你们学校有美术教室 吗 ?What are they doing now? They in the Art room.他们现在正在做什么? 他们正在艺术教室里画画.Where is the art room, please?请问美术室在哪里?...
用电补偿大气压和系统压力的变化.Electricity compensates for barometric pressure as well as system pressure variations.首先,利用大气压将水抬高30英尺.First of all it raised water through 30 feet by utilising the pressure of the atmosphere.曲线上的数字表示围压的大...