security lightseˈcurity ˌlight noun [countable] 
a light that turns on when someone tries to enter a building or area at night
a light that turns on when someone tries to enter a building or area at night
| 单词 | security light |
| 释义 | security lightseˈcurity ˌlight noun [countable] a light that turns on when someone tries to enter a building or area at night |
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