天黑以后，路灯会自动开启。天黑以後，路燈會自動開啟。天黑以後，路燈會自動開啓。

After dark, the street lights come on automatically.

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Simplified: 天黑以后，路灯会自动开启。
Traditional (Taiwan): 天黑以後，路燈會自動開啟。
Traditional (Hong Kong): 天黑以後，路燈會自動開啓。
Pinyin: Tiānhēi yǐhòu, lùdēng huì zìdòng kāiqǐ.
Bopomofo: ㄊㄧㄢㄏㄟㄧˇ ㄏㄡˋ，ㄌㄨˋ ㄉㄥㄏㄨㄟˋ ㄗˋ ㄉㄨㄥˋ ㄎㄞㄑㄧˇ。

Written with HSK 6 vocabulary, at CEFR level B2.

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开启

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