| 单词 | alert system |
| 释义 | alert system The alert system may later be used at local level, with different areas locked down or unlocked according to need. The Sun The failures have exposed problems in the alert system for product recalls. Times, Sunday Times There's also a timer and shopping list, although more useful would be an alert system - put sprouts on now! Times, Sunday Times Limited use for tracking, then, but a good-value alert system. Times, Sunday Times Nevertheless, informed sources give us to understand that the organisation operates a four-stage alert system. Times, Sunday Times |
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