看守著, 提防著He was on the watch for his brother at the front entrance of the school. 他在學校大門口守候著他的哥哥。The customs inspector was on the watch for diamond smugglers. 海關檢查員正密切注視提防著鑽石走私犯的活動。
注意; 注意危險The government is keeping a close watch on the activities of that political party. 政府正在密切注意該政黨的活動。The police kept a watch on him for three weeks. 警察監視他三個星期了。