的意思 be on the watch

1. Be on the watch for any suspicious activity in the area.
保持警惕，留意该区域内的任何可疑活动。

2. We need to be on the watch for any signs of danger during our hike.
在我们远足时，我们需要警惕地观察任何危险的迹象。

3. The security guards are always on the watch for shoplifters in the store.
保安人员始终保持警惕，防止商店内的盗窃行为。

4. Drivers should be on the watch for pedestrians crossing the street.
司机们应该警惕地留意过马路的行人。

5. The police are on the watch for any potential threats to the city's safety.
警方正在警惕地监视对城市安全构成潜在威胁的情况。

6. It's important to be on the watch for signs of illness in your pets.
重要的是警惕地观察宠物是否出现生病的迹象。