Task: Translation
Input (Chinese): 当警方和食品环境卫生署的官员试图以妨碍公众进入为由移除这些雕塑时，他们被活动人士阻止了两个小时。
Output (English): When police and officials from the Food and Environmental Hygiene Department attempted to remove the sculptures on the grounds for obstructing public access, they were prevented from doing so by activists for two hours.