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1·This could eventually present a challenge for the West, says Bitzinger.

Bitzinger表示，这对于西方来说可能最终是个挑战。

2·‘Its toxicity could present a challenge for human exploration, ’ he said.

他说：“这些汞的毒性足可以威胁到人类探月工程的开展。”

3·Mobile devices can present a challenge to users wishing to recall all copies of a message.

移动设备给希望收回消息所有副本的用户提出了挑战。

4·They present a challenge to mental health professionals who have to assist the traumatized population.

这些灾难对于那些去帮助心理受损人群的心理健康专家来说是一项挑战。

5·You may find some passages easier to understand than others, but all passages are designed to present a challenge.

你可能会发现一些文章比其它文章容易理解，但所有的文章都被设计成具有挑战性。

6·People underestimate how much cloud providers present a challenge to IT as it's practiced today in most organizations.

云计算供应商已经对大多数企业内部的IT业务构成了挑战，不过人们往往低估了这些挑战。

7·Potential consumers' demands for increased capacities over the Internet present a challenge for the developers and other members of a project team.

用户对更大的 Internet 容量的潜在需求对开发人员和项目团队的其他成员提出了挑战。

8·With technology evolving the way it is, it does present a challenge, but it's also a tremendous opportunity to join the conversation and engage customers and clients.

现在这种科技演变方式确实带来了挑战，但这也是一个加入对话和占有客户的巨大机遇。

9·Potential users' demands for service with cheap subscriptions in the pay-on-demand infrastructure present a challenge for developers and other members of a project team.

用户希望通过廉价订阅按需付费的基础设施来获得服务，这为开发人员和项目团队中的其他人员带来了挑战。

10·This could present a challenge to website owners and those in the search engine optimization field, who tailor websites to attract more traffic from specific queries.

这将给网站的拥有者以及搜索引擎优化工作者带来新的挑战，因为他们需要将网站设计成更符合特定的搜索人群。