jǐng / fāng / jiā / qiáng / le / xún / luó / yǐ / fáng / chū / xiàn / rèn / hé / fēng / chuī / cǎo / dòng

警方加强了巡逻，以防出现任何风吹草动。

The police increased patrols to prevent any sign of trouble from emerging.