Unfortunately, there is a catch to this simple system.

The one catch to this whole pattern is when or how you synchronize data changes back and forth between the Presentation Model and the view.

整个模式的一个难点是何时或怎样在Presentation Model和视图之间来回同步数据。

To catch chances and develop oneself is the important action for each nation to face globalization.

抓住机遇，发展自己，这是当今各个民族国家应对全球化的重要举措。

The billionaire philanthropist said he had invested about$ 1bn in dozens of early-stage companies including battery, next generation nuclear and free air carbon capture hoping they would develop breakthrough technologies.

这位亿万富翁慈善家表示，他已对数十家早期阶段公司投资约10亿美元，希望它们将开发出突破性技术。这些公司活跃于电池、下一代核电和大气层碳捕捉等领域。

After today's meetings, officials from both sides say they pledge to work closely to resolve the situation and they agree the Korean peninsula should be nuclear free.

今天的会面结束之后，双方官员都表示他们愿意紧密合作解决问题，并一致同意朝鲜半岛无核化。

We propose probable mechanisms for the generation of reactive oxygen species, nuclear tubules and free calcium at the cellular level triggered by the fs beam.

我们在单细胞水平上提出了一些凋亡过程的可能机制，如活性氧化合物、核管，和细胞内自由钙离子的产生。

Some Iran experts argue that Mr. Ahmedinejad is planning to call for a "nuclear free zone in the Middle East," as part of his package of proposals for talks with the group of five, plus one.

一些伊朗专家辩称，艾哈迈迪内贾德计划“在中东设立一个无核区”，作为他同5个安理会常任理事国加德国会谈提案的一部分。

It was this government that introduced the world's first and only nuclear free legislation.

也正是此届政府颁布了世界上第一个、也是唯一一个无核的立法。

China is the host of the Six-Party Talks, which began in2003 and are aimed at making the peninsula nuclear free.

致力与解决朝鲜半岛核问题的六方会谈自2003年就开始了，中国是这次会谈的主持方。

South Pacific Nuclear Free Zone Treaty ( Treaty of Rarotonga)

南太平洋无核区条约（拉罗通加条约）

Protocol II and III to the South Pacific Nuclear Free Zone Treaty

南太平洋无核区条约第二议定书和第三议定书

This chapter starts from the history and characteristics of the low-field NMR, then introduces the phenomenon of nuclear magnetic resonance free induction decay ( FID) signal and spin-echo signal and their obtaining principle, and the entire experiment measuring devices and circuit analysis.

这一章从低场NMR的历史、特点出发，介绍了核磁共振现象中自由感应衰减（FID）信号和自旋回波（spin-echo）信号的获得原理、整个实验系统的测量装置和电路分析。

Studies on abnormal development of embryo in nuclear free litchi

无核荔枝胚胎异常发育的研究

In this paper, the properties of system consisting of various nuclear species and free nucleons are described by a nuclear statistical equilibrium system consisting of a typical heavy nucleus, a particles, free neutrons and protons.

本文采用由自由核子，α粒子及平均重核组成的核统计平衡模型描述由自由核子和许多种类原子核组成的系铣。

At last, international regime of nuclear non proliferation impels the countries to establish nuclear free zone in succession. However, not only the international security environment outside, but also the defects of the regime itself result in the limitation of the international nuclear non proliferation regime.

最后，国际核不扩散机制促使世界各地陆续建立了无核区。但是，国际安全大环境等外部原因和机制内部的自身缺陷也造成了国际核不扩散机制效用的局限性。

Continuation Committee of the Conference for a Nuclear Free Pacific

太平洋无核区会议常设委员会

An Analysis on the Outlook of the South-east Asian Nuclear Weapon Free Zone

东南亚无核区前景透析

That is the great paradox of nuclear deterrence: if you don't have it and dream of a nuclear weapon free world, there actually may be a hot war.

核威慑的悖论是：如果你没有核武器，或者假想这是一个无核世界，那么热战就不可避免。

The billionaire philanthropist said he had invested about$ 1bn in dozens of early-stage companies-including battery, next generation nuclear and free air carbon capture-hoping they would develop "breakthrough" technologies.

这位亿万富翁慈善家表示，他已对数十家早期阶段公司投资约10亿美元，希望它们将开发出“突破性”技术。这些公司活跃于电池、下一代核电和大气层碳捕捉等领域。

Treaty on South-East Asia nuclear weapon free zone;

东南亚无核武器区条约；

Evaluation of methods for human nuclear DNA extraction from free margins of finger nail and hair samples

指甲游离缘及毛发中核DNA抽提方法的探讨