That is the greatest challenge of all . It must not be a task that the united states undertakes alone

这是最大的挑战，这项挑战不应该有美国人独自承担。

It must not be a task that the united states undertakes alone .

这是一项不可能由美国单独行动就能完成的任务。

How the sec undertakes this challenge of technology is the compelling question .

证交会如何应对这个技术挑战是一个紧迫的问题。

Alistair thornton , an economist at ihs , said china 's long-term economic growth would ultimately depend on what reforms the new leadership undertakes .

ihs经济学家阿利斯泰尔桑顿（alistairthornton）表示，中国的长远经济增长最终将取决于新领导层推行哪些改革。

The aim is to greatly improve the scope , quality assurance and transparency of such analyses , both by broadening and shoring up the base on which they stand and by widening the capabilities and expertise of the community that undertakes them .

通过拓宽其依托的基础数据和提高承担这项任务组织的能力和专业性，其目的旨在扩大此类分析的范围，提高质量保证和透明度。