The second was easier to adapt to a new system, but required a great deal of work from the developer.
后者更容易适应新系统，但需要开发者进行大量的工作。
Obtain the Tax ID number of the consignee, this is for reporting purposes only but required by Customs.
获取收货人的税务身份号码，这仅是为报告目的，但为海关所要求。
In the case of radium isolation was completely successful but required several years of unremitting effort.
镭的分离是完全成功的，但仍需多年不懈的努力。
I rented a shortwave radio, which wasn't too expensive but required a fifty-pound deposit, a lot of money for me.
我租了一个短波收音机，租金不贵，但需要支付50英镑的押金，这对我来说可是一大笔钱。
It did a lot, but required a good deal of creativity on the part of the script writer to do more than basic tasks.
它的确可以完成很多功能，但除了完成那些基本的任务，复杂些的任务就需要脚本编写者具有极强的创造性。
This allowed the iteration deliveries to be shipped on schedule, but required careful management of the non stop-ship scenario backlog.
这令迭代交付按计划完成，但需要对非停船场景后备的小心管理。
The cofferdam was demolished on June 6, 2006, in just 12 seconds, but required enough explosive force to topple 400 10-story buildings.
围堰在2006年6月6日，仅用了12秒钟即被拆毁，但要拆毁这个长达400米，高达10层楼的建筑物需要有足够的爆破力。
The Great Depression of the 1930s, however, all but required sharply unbalanced budgets, whether from Herbert Hoover or Franklin Roosevelt.
然而，1930年代的大萧条使预算急剧转向不平衡，无论是赫伯特·胡佛当政还是富兰克林·罗斯福当政。
Such problems could be circumvented, but required a bit more knowledge of customizing emacs than the average font designer was likely to display.
这些问题都可以解决，但对定制的emacs，需要具备比一般字体设计人员更多的了解。
Theyexplained broken symmetry within the framework of the Standard Model, but required that the Model be extended to three families of quarks.
他们解释打破对称的框架内进行的标准模型，但需要的是，示范推广到三个家庭的夸克。
To achieve clarity the translators sometimes supplied words not in the original texts but required by the context. If there was uncertainty about such material, it is enclosed in brackets.
为使文意清晰，译者有时也会按上下文的需要，加些原文中没有的字，对这些资料若不够确定的话，则用括号括起来。
Gamers could use IM to contact a friend directly and ask, but that required a lot of effort on the part of the user.
玩家可以用即时通讯软件直接联系一个朋友并询问他，但是这需要玩家付出大量努力。
Diamond thinks they laid the moai on wooden sledges, hauled over log rails, but that required both a lot of wood and a lot of people.
戴蒙德认为他们把摩艾石像放在木制雪橇上，然后拖过原木轨道，但这需要很多木材和人力。
Creating a gap between her income and spending required a paradigm shift and entailed sacrifice and commitment, but by going into financial lockdown, Nicole gained financial independence.
在收入和支出之间创造差距，既需要转变思考方式，还需要牺牲和投入，但通过给自己的财务设限，妮可最终实现了经济独立。
Some workers, like Jane Matheson, are retrained to handle the new equipment, but often a whole new set of skills is required and that means a new, and invariably smaller set of workers.
有些工人，比如JaneMatheson，会重新接受培训来使用新设备，但通常需要一整套新的技能，这意味着需要一批新的、规模更小的工人。
The cafe owner has put up the required "no smoking" signs, but thinks his responsibility stops there.
咖啡店老板已贴上所要求的“禁止吸烟”的标志，但他认为自己的责任到此为止。
The physical stamina required for this sport is intense but the psychological demands are even more overwhelming.
这项运动需要很强的身体耐力，但对心理上的要求更是压倒性的。
I know it's the end of high school, but many of classmates are going on to the same university, and we are still required to study hard.
我知道高中已经结束了，但是很多同学将上同一所大学，我们仍然需要努力学习。
It is a job that required attention and caution, but he cannot keep his attention on the machines, because he has problems at home.
工作要求他得时时聚精会神、小心谨慎，但他不能把注意力放在机器上，因为他家里出了一些问题。
It isn't a school subject or an academic discipline, but it can be learned; It is a quality that is required of artists, but it is also present in the lives of scientists and entrepreneurs.
它不是一门学校的科目或学术学科，但它是可习得的；这是艺术家必须具备的品质，但它也存在于科学家和企业家的生活中。
Valley Crossing will take you through some stunning scenery but there are several points along the way where you'll need the level of fitness required to get over some pretty big rocks.
山谷穿越路线会带你们欣赏沿途一些令人惊叹的美景，但经过某些地方时，大家需要具备良好的身体素质，才能翻越巨大的石头。
A second language isn't generally required to get a job in business, but having language skills gives a candidate the edge when other qualifications appear to be equal.
在商业领域找工作通常不需要掌握第二语言，但拥有语言技能会让求职者在其他条件相当的情况下获得优势。
It used to be that the second semester of International Banking was an elective, but now it says it's a required class.
以前，第二学期的国际银行学是选修课，但现在它变成了必修课。
It's not required, but it's a good idea.
好像没有要求，不过这是个好主意。
The ticket had a strict no-transfer policy, but since passport information was not required when booking, any Canadian Elizabeth Gallagher can use it.
票有严格的不可转让的政策，但由于预订时不需要护照信息，加拿大任何叫伊丽莎白·加拉格尔的人都可以使用它。
If you are under 16 and do not yet have the required height, we would still be interested in meeting you, but you must bring a parent.
如果你未满16岁，还没有达到要求的身高，我们仍有兴趣与你见面，但你必须带一位家长。
Basic familiarity with WSDL is helpful but not required.
基本了解WSDL会有帮助，但不是必需的。
Group access control scaled well but still required manually managing group memberships.
用户组访问控制可伸缩性很好，但还是需要手动地管理组成员。
Group access control scaled well but still required manually managing group memberships.
用户组访问控制可伸缩性很好，但还是需要手动地管理组成员。
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