几十年来，过瘦的模特一直是争议的焦点，两名研究人员表示，模特的体重应该是职场的健康和安全问题。

Excessively skinny models have been a point of controversy for decades, and two researchers say a model's body mass should be a workplace health and safety issue.

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也门长期以来一直是美国在安全方面关注的焦点。

Yemen has long been a focus of U.S. security concern.

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相比一些其他关注焦点，公开和安全会不会退居二线？ 这样的担心在周日出现在许多微博博文中。

Fears that transparency and safety have become secondary to other concerns was present in many Weibo postings on Sunday.

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