Uncertainty in oil markets also has led to deep concerns over energy security.

石油市场的不确定性，也引发了对能源安全的高度关切。

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He had also more recently expressed deep concerns about being sent to Afghanistan.

据他的表哥纳达尔·哈桑介绍，最近一段时间哈桑少校因为即将被派往阿富汗而表现出深深的不安。

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In a phone conversation, they expressed deep concerns about the situation in Syria.

在电话交谈中，他们对叙利亚局势表示深切关注。

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Listen, people have deep concerns about this situation in terms of how it's going to end.

BBC: Transcript of Douglas Alexander interview

You also had deep concerns about whether under our new terms, Instagram had any plans to sell your content.

FORBES: Instagram Totally Scraps New Policies

Opposition AMs expressed their deep concerns with the lack of trust and confidence they had in the Welsh government's health minister.

BBC: Motion of no confidence in the health minister