Các câu ví dụ cho từ alert

1. It comes three weeks after alert viewers discovered the internationally rejected nine-dash line in the South China Sea was included in the Hollywood-produced animated film "Abominable.

2. Paris has been on flood alert for the last two days, with the Seine bursting its banks and swamping riverside highways, causing all river traffic, including the popular "bateaux-mouches" tourist cruises, to be suspended.