That was when Calvin Coolidge, the 30th president, permanently closed them to unapproved visitors.

就在那时，第30任总统卡尔文·柯立芝永久禁止未经批准的游客参观白宫。

He added that farmers have dug thousands of unapproved wells, while streams supplying water to the lake have dried up.

他还说，农场主们未经许可挖了数千口水井，而向湖泊供水的溪流已经干涸。

I just can't go and pursue things unapproved.

我不能就这样走做没有批准的事。

The media content enjoys copyright protections and the companies want governments to enact rules to restrict unapproved use of their material.

媒体内容享有版权保护，这些公司希望政府制定法规，以限制那些未经批准使用其材料的人工智能开发者。

It has been authorized, but the police are warning protesters not to go ahead with an unapproved march through the city centre afterwards.

游行已经得到批准，但警方警告抗议者活动结束后不要在市中心举行未经审核的游行。

It catalyzed the most rapid vaccine development in history and brought to life a niche, previously unapproved form of technology.

它促进了历史上最快的疫苗开发，并使一种以前未获批准的利基技术形式栩栩如生。

As a result, some American patients have gotten generic drugs with toxic impurities, unapproved ingredients, dangerous particulates or that are not bioequivalent.

结果， 一些美国患者得到的仿制药含有有毒杂质、 未经批准的成分、危险微粒或不具有生物等效性。

It cited Korea’s “inadequate management” of the sensitive items, essentially hinting the chemicals were being sent on to unapproved countries like North Korea and Iran.

它引用了韩国对敏感物品的“管理不善” ，实质上是在暗示这些化学品被运往朝鲜和伊朗等未经批准的国家。