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1. To be clear, Johnson & Johnson's vaccine has not yet received FDA's green light though that is expected in the matter of days.
green light 批准，许可
The food industry was given a green light to extend the use of these chemicals
食品业获准继续使用这些化学品。
2. L.A. County Sheriff Alex Villanueva says they will look into whether speed was a factor. But there were no indications of drugs or alcohol.
look into 考察;调查;研究
A working party has been set up to look into the problem.
已成立一个工作小组来调查这个问题。
