HAS BEEN A CHALLENGE in Chinese translation

• 是一个挑战
• 一直是个挑战
• 也是一个挑战
• 一直是个难题

Examples of using Has been a challenge in English and their translations into Chinese

Convincing talent to choose an automotive manufacturer over tech giants like Google or Amazon, however, has been a challenge.
然而，在像谷歌或亚马逊这样的科技巨头中选择汽车制造商的令人信服的人才是个挑战。

However, if you want to find the best conservatory to suit your needs, then until now there has been a challenge.
但是，如果您想找到最适合您需要的温室，那么到现在为止一直是一个挑战。

Yet due to a combination of fundamental and technical obstacles, finding such a problem has been a challenge.
然而，由于基本原理和技术结合的障碍，找到这样的问题一直是一个挑战。

Addressing this level of new vacancies in a timely manner, while maintaining a focus on core programmatic responsibilities, has been a challenge at all management levels.
及时处理如此之多新的空缺职位，同时仍专注于核心方案的责任，对各级管理层均是挑战。

UNFPA has argued in the past that, due to its limited staff size and the complexity of its work, accommodating entry-level professional posts has been a challenge.
人口基金辩称，过去由于人员人数有限，工作又复杂，要接纳多个起职专业人员员额有困难。

But figuring out how to produce perovskite-based energy devices that last longer than a couple of months has been a challenge.
但是，弄清楚如何生产能持续数月以上的基于钙钛矿的能源设备一直是一个挑战。

However, integrating all these factors into the miniaturization and smartphone has been a challenge until now.
然而，将所有这些因素整合到小型化和智能手机中一直是一个挑战，直到现在。

The second consideration is that producing cookstoves that women want to use and marketing these to low-income families has been a challenge.
第二个考虑是制作妇女愿意使用的炉灶以及向低收入家庭销售这样的炉灶并非易事。

Although they have been used to achieve high performance, integrating them on-chip with linewidths approaching those of lasers has been a challenge.
尽管它们已经被用于实现高性能，但是将它们集成在芯片上并且线宽接近激光器的线宽一直是一个挑战。

A: For us, the slow maturity of industry standards has been a challenge.
对我们来说，成熟缓慢的行业标准一直是一个挑战。

Adding volume plugins for new storage systems, however, has been a challenge.
然而，为新的存储系统添加volume插件一直是一个挑战。

Creating a(traceability) system for the entire food supply ecosystem has been a challenge for years, and no one had figured it out.
为整个食品供应生态系统创建(可追溯性)系统多年来一直是一个挑战，没有人能够解决这个问题。

Getting aid to Syrians trapped in the more than three-year conflict has been a challenge, with the Syrian government insisting it approve any shipments.
在三年多的冲突中被困的叙利亚人获得援助一直是一个挑战，叙利亚政府坚持批准任何货运。

Almost all the regions noted that translating strategies and actions plans into effective work and management plans has been a challenge.
几乎所有区域都指出，将战略和行动计划转变为切实有效的工作和管理计划存在挑战。

But finding the best way to stick a device to the body has been a challenge.
不过找到器械贴在身体上的最佳方法一直是一个挑战。

Over the course of my career, this has been a challenge I have faced over and over again, and thankfully, I have learned how to handle it.
在我的职业生涯中，这是一个挑战，我已经面对了一遍又一遍，谢天谢地，我已经学会了一些方法来处理它。

A number of companies have attempted to develop an ethane-based process but development of a process with reaction temperatures below 500oC has been a challenge.(cheresources. com, 2008).
有数家公司曾尝试开发乙烷法工艺，但要开发出反应温度低于500摄氏度的工艺一直是个挑战（cheresources.com，2008年）。

Because'rogue' immune cells are so rare in a blood sample- less than one in 400 cells- studying them has been a challenge.
由于“流氓”免疫细胞在血液样本中如此罕见(不到400个细胞中的一个)，因此研究它们一直是一个挑战。

Because'rogue' immune cells are so rare in a blood sample- less than one in 400 cells- studying them has been a challenge.
由于“流氓”免疫细胞在血液样本中非常罕见--不到400个细胞中的一个，因此研究它们一直是一个挑战。

This has been a challenge in past.
这在过去是一个不同的挑战。