A day, host burnishs stone again and again abluent, want again drive up its value.一天, 主人把石头一再磨光洗净, 想再次抬高它的价值.Watermelon: watermelon abluent, be sure to keep in mind to cannot be cut with the knife.西瓜: 把西瓜洗净, 切记不可用刀切.Bals...
A day, host burnishs stone again and again abluent, want again drive up its value.一天, 主人把石头一再磨光洗净, 想再次抬高它的价值.Watermelon: watermelon abluent, be sure to keep in mind to cannot be cut with the knife.西瓜: 把西瓜洗净, 切记不可用刀切.Bals...
在这个形状不规则的湖泊的湖心以外的地方有一眼喷泉。Located off-center in the irregularly shaped lake was a fountain.某些湖泊的水位变动极大.The water level in some lakes may vary greatly.在海市蜃楼中,沙漠有时会现出湖泊的形象.In a mirage the desert will mimic a lake....
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.这些工厂生产电子管 、 晶体管 、 收音机和电视机.These factories produce tubes, transistors, radio sets and TV sets.这些放大器是用微型电子管制成的.These amplifier...