Today, I and father make earthy telephone call in the home.
今天，我和爸爸在家里做土电话。
Began to do, we prepare the data that place of the phone that make land needs first, fine the cord that grows again and cup of two one-time paper. Father says: “ cord should grow some, if string is not long, be equal to talked face-to-face. ” then, I sought one pact 2. 5 meters long string. Then, I begin the bottom stiletto in paper cup. I take a spinous pen, emphatically is plunged into toward paper cup bottom, paper cup bottom was hit by me immediately a large hole, I take paper cup gladly to look to father, return agitato to say: “ stiletto is really easy! ” result, father says: “ aperture is not hit too greatly, want to see the size of accurate cord. If Kong Tai became big, cord makes good written guarantee or meeting drop out comes, card is not firm. If Kong Tai is small, cord wears the past very hard. ” listened father's word, I know this paper cup cannot reoccupy, then I changed a new paper cup. At this moment, father offers my screwdriver bore with trumpet. This, I used screwdriver cautiously to get a full marks in paper cup bottom / alveolus, next, wear the one aspect of the matter of cord from the alveolus of paper cup bottom go in, play the string in the cup to written guarantee, such cord are with respect to card in the cup. I use same method, had done additional at the same time, such earthy phones had been done.
开始做了，我们先准备好做土电话所需要的材料，一条又细又长的绳子和两个一次性纸杯。爸爸说：“绳子要长些，如果绳子不长，就等于面对面说话了。”于是，我找来了一条约2。5米的长绳子。接着，我就开始在纸杯的底部打孔。我拿起一支尖尖的笔，用力地往纸杯底部扎去，纸杯底部马上被我打出了一个大孔，我高兴地拿起纸杯给爸爸看，还兴奋地说：“打孔真容易！”结果，爸爸说：“孔不要打得太大，要看准绳子的大小。如果孔太大了，绳子打好结还是会掉出来，卡不牢。如果孔太小，绳子就很难穿过去。”听了爸爸的话，我知道这个纸杯不能再用了，于是我换了一个新的纸杯。这时，爸爸提议我用小号的螺丝刀钻孔。这一次，我小心翼翼地用螺丝刀在纸杯底部钻了一个满分/小孔，然后，把绳子的一端从纸杯底部的小孔穿进去，把杯子里的绳子打一个结，这样绳子就卡在杯子里了。我用相同的做法，做好了另外一边，这样土电话就做好了。
Can earthy phone communicate really? Ground of my too impatient to wait and father do a test together. Father lets me put cup mouth in side side first, pull string again straight, such, the distance of I and father was pulled open. Then father aims cup mouth conversation, I listen seriously, father's sound was transmitted in the cup as expected. I let father be changed immediately, I say father listens, I talk in a low voice to cup mouth, father made the gesture of an OK with the hand at the same time, nod at the same time, tell me he heard the word that I say, I am too glad, agitato makes jump again again. Sit beside father's, I ask curiously: “ why can earthy phone transmit sound? ” father says patiently: Because “ pulls straight cord to be able to transmit sound through vibration, such the other side can be heard. ” is so such.
土电话真的能通话吗？我迫不及待地与爸爸一起做试验。爸爸先让我把杯口放在耳边，再把绳子拉直，这样，我和爸爸的距离就拉开了。接着爸爸对准杯口说话，我认真地听，果然杯子里传来了爸爸的声音。我马上让爸爸换过来，我说爸爸听，我对着杯口小声地说话，爸爸一边用手打了一个OK的手势，一边点头，告诉我他听到了我说的话，我太高兴了，兴奋地又叫又跳。坐在爸爸的身边，我好奇地问：“为什么土电话能传播声音呢？”爸爸耐心地说：“因为拉直的绳子可以通过振动传播声音，这样对方就能听到了。”原来是这样。
Earthy phone is really interesting!
土电话真有趣！(文/张玮)