No one has solved this problem yet, and it is a highly relevant and important issue that needs to be addressed.
还没有人能解决这个问题,而这又是一个高度关切且重要的问题,亟待解决。
The F.D.A. announced in 2007 that it was aware of that problem, but it has taken no action.
食品和药物管理局在2007年宣布它认识到了那个问题,但它没有采取行动。
The F. D. A. announced in 2007 that it was aware of that problem, but it has taken no action.
食品和药物管理局在2007年宣布它认识到了那个问题,但它没有采取行动。
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