Traditionally they have made billions by selling their programs, often demanding hefty sums to install them and then charging an annual maintenance fee for upgrades and technical support.
之前他们卖程序，这通常是需要斥巨资进行安装，再收取不菲的年维护和升级费用，可以大赚一笔。
Of course, the job is one of the most demanding in the humanities, (any mother care to disagree?) and I often work 14 hours a day, (24 is more like it).
当然，我的工作是人类要求最高的工作之一(有哪位母亲会反对吗？)我通常工作一天14小时(24小时更为准确)。
When I had two small children and a demanding job, I tried valiantly but often found myself at the end of the day praying in vain: "Dear God, just one more hour, please."
当我育有两个小孩，还应付着一份严肃吃力的工作时，我也竭力调和矛盾，但是我常常只能在一天结束的时候徒劳地祈祷：“上帝啊！”请再给我一个小时吧！
For details of the requirements, so often on his own and his colleagues demanding.
因为对细节的要求，所以经常会对自己和同事要求很高。
Workers, says Tsuyoshi Hirabayashi of the justice ministry, are often abused by employers demanding long hours and paying much less than the legal minimum wage.
工人们，司法部的TsuyoshiHirabayashi说，通常被雇主们要求工作更长时间而所得报酬又比法定最低工资低很多。
Most ordinary people don't run demanding desktop applications, unless they're into video processing or gaming, and they don't actually do much multi-tasking so an Atom is often good enough.
大多数普通用户不会运行那些大量消耗资源的桌面应用，除非是在做视频处理或玩游戏，而且也不会做大量的任务切换，所以Atom多数情况下足以胜任。
Critics often ridiculed this poverty line as "starvation line" and had been demanding a better measure of poverty.
评论家常常讽刺这贫困线是“饥饿线”并已要求出台更合理的贫困评估法。
On the physically demanding and entertainment intensive court-scape of the NBA, it's often impossible to distinguish between swagger and stagger.
在NBA里对身体的需求以及球场上的娱乐性，似乎在狂妄自大和蹒跚而行之间很难辨别清楚。
Rock climbing is a physically and mentally demanding sport, one that often tests a climber's strength, endurance, agility and balance along with his mental control.
攀岩是一个对身体和精神都有考验的运动，往往考验登山者的力量、耐力、灵敏性和平衡能力，当然还有对自我的精神控制能力。
He was often associated with words like genius, ambitious, tough, powerful, demanding, and successful.
“坚韧不拔的”、“强有力的”、“苛求的”、“成功的”这样一些词联系在一起。
A mother who has a demanding job often feels split in two by the demands of both work and home.
还要干费力工作的母亲常常感觉到工作和家庭压得她透不过气来。
A mother who also has a demanding job often feels split in two by the demands of both work and home.
从事非常紧张工作的母亲常常觉得一心挂两头―工作和家。
A mother who also has a demanding job often feels split in two by the demands of both work and home.
从事非常紧张工作的母亲常常觉得一心挂两头―工作和家。
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