但不是在这种情况下。
Complex life evolved on the Earth's surface, but not on Mars or other planets in the solar system because on those planets, early surface life was killed by UV radiation.
复杂的生命在地球表面进化，而不是在火星或太阳系的其他行星上，因为在那些行星上，早期的地表生命被紫外线杀死了。
Why do you paint on the bottom half of your paper, but not on the top half?
为什么你画在纸的下半部分，而不是上半部分？
Books are piled up everywhere, but not on the shelves.
书本堆积各处，却偏偏不在书架上。
You need them, but not on a permanent pay list.
你需要他们，但并不是一个永久的付费列表。
ECoG does require surgery, but not on the brain itself.
使用ECoG确实需要动手术，但不需要在大脑上动手术。
You've spent the day on the Internet - but not on the Web.
你把一天的时间都花在了互联网上——而不是万维网。
Hilary Duff is joining the cast of "Gossip Girl" - but not on a regular basis.
希拉里·达芙即将加入《绯闻女孩》第三季的演员阵容，但应该不是什么常驻角色。
You've spent the day on the Internet - but not on the Web. And you are not alone.
你把一天的时间都花在了互联网上——而不是万维网。而且，并不是只有你这样。
Nakheel’s bankers, including bilateral and syndicated lenders, will be paid in full but not on time.
借款给棕榈岛集团的银行，包括单个银行和银行集团，都会得到全额偿付，但偿付时间会延后。
Our relationship with the world began to change; we could practise control, but not on everything.
于是乎，我们同世界的关系发生了变化，我们便开始控制起来，虽然还谈不上控制一切。
In this example (11), Mozilla Firefox is installed on the client machine but not on the Citrix server.
在本例中(11)，MozillaFirefox安装在客户机机器上，而不是Citrix服务器上。
The 5500 had 32mb of flash and 64mb of ram; as a result, a few programs run on the 5500 but not on the 5600.
上有32MB的闪存和64 MB的RAM；结果是有些程序可以在5500上运行，但是无法在5600上运行。
I would make a change, and sometimes my build would fail with compilation errors or linking errors, but not on my code.
如果我做一个变更，有时候我的构建会由于编译错误或者连接错误而失败，但是不是由于我的代码。
Quite often people put their mailbox ID and password on the Incoming server Settings, but not on the Outgoing server Settings.
人们常常把邮箱的帐号和密码在内网邮件服务器中做了设置，却没有相应在外网邮件服务器做设置。
One of the most important lessons learned during the field missions is that some people perform well on one team but not on another.
在研究任务中得到的最重要的教训是一些人在一个团队表现良好，在另一个却不然。
This time he did touch her, but not on the shoulder. He laid his hand on her thigh, careful to keep his fingers up above the stump.
这次他碰了碰她，不过不是肩头，他将手放在她的大腿上，小心地把指头放在残肢伤口的上方。
Doctors do agree on limiting a quantity of food, but they also insist on certain foods (but not on the total banishment of them) and a balanced diet.
医生当然同意限制进食食的量，但是他们也只是针对某些食物（但也不是完全不食）和建议均衡饮食。
They might only have run their client and server in a homogeneous environment; that is, either on a J2EE platform or on a.net platform, but not on both.
他们可能在异构的环境中运行他们的客户和服务器程序，即或者J2EE平台，或者. NET平台，或者二者都有。
Mr Obama also said he would allow taxes on the rich to rise in 2012, as they are currently slated to do (but not on everyone else, as they are also slated to do).
奥巴马先生还说道，2012年他将提高富人的税收，正如他们目前准备做的(但是不会提高其他人的税收，正是他们目前准备做的)。
If your content changes often, but not on every page hit, consider setting a Cache-Control: max-age header; most users access pages again in a relatively short period of time.
如果你的内容经常改变，但是不是每次页面请求都改变，考虑设置一个Cache - Control： max -age头信息；大部分用户会在短时间内多次访问同一页面。
The election campaign has been fought not in street rallies but on the airwaves.
这场竞选大战不是在街头集会中进行，而是在无线电波中交锋。
She wore a lovely tiara but the groom, not to be outdone, had on a very smart embroidered waistcoat.
她戴着一个漂亮的冕状头饰，而新郎也不甘示弱，穿了一件很潇洒的刺绣马甲。
We did not base our system on property but opportunity—which meant we based it not on stability but on mobility.
我们的制度不是建立在财产之上，而是建立在机会之上——这意味着我们的制度不是建立在稳定之上，而是建立在流动性之上。
The Telegraph brand will appear on some products, but not all.
《每日电讯报》的品牌将出现在某些产品上，但并非全部产品。
Cost must be controlled, not just on the shop floor but in the boardroom too.
成本必须得到控制，不仅仅是全体工人，还有董事会。
But this change has not yet impressed itself on the minds of the public.
但是这种变化仍没有使公众对此铭记在心。
The airline had not been searching unaccompanied baggage by hand, but only screening it on X-ray machines.
这家航空公司一直没有手工检查非随身行李，只是在X光机上检查。
The airline had not been searching unaccompanied baggage by hand, but only screening it on X-ray machines.
这家航空公司一直没有手工检查非随身行李，只是在X光机上检查。
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