Active and passive voice checker
蜜蜂一蜇，就能治病？这不是武侠小说里的情节，而是一种古老的中医疗法——蜂疗。
，详情可参考同城约会
社運人士郭鳳儀：香港當局監禁我父親，企圖令我噤聲
The simplest approach is to check every single point. Compute the distance from the user's location to every restaurant in the database, keep the ones that are close enough, and throw away the rest.