就行

• You switch on , wait until the screen turns green , push in the disk and there you are !
  你打开开关，等屏幕变成绿色，把磁盘推进去就行了！
• If the theme were hackneyed, i should be obliged to deal gently with the reader .
  假如这是个老生常谈的题目，我只消向读者轻描淡写一番就行了。
• I 've laid the fire in the hearth , all you have to do is to put a match to it ..
  我已在火炉里放好木柴，作好了生火准备，你只要把它点燃就行了。
• Our powder has to take fire instantaneously so that its mechanical effect may be complete .
  只要火药能够很快地燃烧，使它的力量能得到充分的发挥就行了。
• To add 2. 5 and 5. 4, all we need is two such strips placed side by side as shown below .
  要把25和54相加，只需要把两张这样的纸条象下图那样并靠在一起就行。
• There he was, and there was the decree; he had been taken in france, and his head was demanded .
  他在哪里，法令就行在哪里，他在法国被捕，他的头颅就要被索取了。
• Do n't worry about it. it 's water over the dam. just be sure you do n't make the same mistake again .
  别烦恼，这件事情木已成舟，只要注意不再犯同样的错误就行了。
• He just has to strike hard enough in the west to knock out the ins and bring in the outs .
  他只要在西线加紧进攻，把台上执政的人赶下去，把台下在野的扶植上来就行了。
• Since sound waves are longitudinal, only one dimension need be considered to obtain the sound wave solution .
  由于声波是纵波，所以为了得到其解，只需考虑一维就行了。
• Barnum's successive hoaxes only brought him greater popularity, so long as he altered them often enough .
  巴纳姆骗人的玩意，使他越来越受人欢迎；只要他经常变换花样就行。