1. be on watch for在线翻译
1. The 500 more that will be closed had been on an internal watch list for some time.
2. The more information available about a passenger, the less likely a passenger will be mistaken for someone on a watch list.
3. Florida State University oceanographer Ian MacDonald warned his fellow scientists to be on the watch for deaths of big marine mammals.
4. He said it is important for everyone to be vigilant and keep a close watch on the industry.
5. be on watch for在线翻译
5. British farmers have been asked to be on watch for big cats that have been seen roaming the countryside killing sheep and thrilling the public.